Search Results: "Probability"
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13:17 Popular
Probability that at least 2 people in a room of 30 share the same birthday | Probability and Statist
969 views / 0 likes - addedThe probability that at least 2 people in a room of 30 share the same birthday. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/probability-and-combinatorics-topic/probability_combinatorics/e/probab
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09:56 Popular
Probability 1 Module Examples
845 views / 0 likes - addedBasic probability examples (the type seen in the probability 1 module) More free lessons at: http://www.khanacademy.org/video?v=mLE-SlOZToc
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04:10 Popular
The Last Banana: A Thought Experiment In Probability - Leonardo Barichello
2,029 views / 1 likes - addedView full lesson: http://ed.ted.com/lessons/the-last-banana-a-thought-experiment-in-probability-leonardo-barichello Imagine a game played with two players and two dice: if the biggest number rolled is one, two, three, or four, player 1 wins. If the bigges
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05:05 Popular
Making Predictions With Probability
771 views / 0 likes - addedMaking predictions with probability
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05:03
Probability From Compound Sample Space
662 views / 0 likes - addedProbability from compound sample space
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07:25 Popular
Constructing Probability Model From Observations
773 views / 0 likes - addedConstructing probability model from observations
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08:18
Basic Probability
638 views / 0 likes - addedAn introduction to probability More free lessons at: http://www.khanacademy.org/video?v=uzkc-qNVoOk
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08:39 Popular
Free Throw Binomial Probability Distribution
814 views / 0 likes - addedFree throw binomial probability distribution
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10:06
Probability (part 3)
661 views / 0 likes - addedMore on probability. More free lessons at: http://www.khanacademy.org/video?v=wBDOCvHYckE
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06:34 Popular
Dependent Probability Example 2
747 views / 0 likes - addedAnother example of dependent probability More free lessons at: http://www.khanacademy.org/video?v=7BkcNLOf56w
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09:16
Probability (part 6)
642 views / 0 likes - addedIntroduction to conditional probability More free lessons at: http://www.khanacademy.org/video?v=xf3vfczoCho
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10:24 Popular
Probability Of Making 2 Shots In 6 Attempts
755 views / 0 likes - addedProbability of making 2 shots in 6 attempts
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09:10 Popular
Probability using Combinations
736 views / 0 likes - addedProbability of getting exactly 3 heads in 8 flips of a fair coin. More free lessons at: http://www.khanacademy.org/video?v=Xqfcy1rqMbI
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10:08 Popular
Probability (part 5)
722 views / 0 likes - addedProbability of getting a certain number roll in Monopoly More free lessons at: http://www.khanacademy.org/video?v=2XToWi9j0Tk
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10:05
Probability (part 7)
654 views / 0 likes - addedMore on conditional probability. Touch on Bayes' Theorem. More free lessons at: http://www.khanacademy.org/video?v=BLcgeLALLnc
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10:02
Probability Density Functions
612 views / 0 likes - addedProbability density functions for continuous random variables. More free lessons at: http://www.khanacademy.org/video?v=Fvi9A_tEmXQ
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06:00 Popular
Compound Probability of Independent Events
726 views / 0 likes - addedProbability of particular sequences of flips More free lessons at: http://www.khanacademy.org/video?v=xSc4oLA9e8o
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09:01 Popular
Dependent Probability Example 1
749 views / 0 likes - addedExample of the type of problem in the Khan Academy Dependent Probability module More free lessons at: http://www.khanacademy.org/video?v=xPUm5SUVzTE
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10:30
Probability (part 1)
517 views / 0 likes - addedWhat probability is. More free lessons at: http://www.khanacademy.org/video?v=3ER8OkqBdpE
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06:17
Probability of More Complex Outcome
627 views / 0 likes - addedu08_l4_t1_we2 Probability of More Complex Outcome
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13:17 Popular
Birthday Probability Problem
828 views / 0 likes - addedThe probability that at least 2 people in a room of 30 share the same birthday. More free lessons at: http://www.khanacademy.org/video?v=9G0w61pZPig
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05:30 Popular
Mega Millions Jackpot Probability
748 views / 0 likes - addedProbability of winning the Mega Millions jackpot More free lessons at: http://www.khanacademy.org/video?v=gyqodNhM3EU
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08:58 Popular
Frequency Probability and Unfair Coins
779 views / 0 likes - addedA different way of thinking about probability when we don't have equally likely events More free lessons at: http://www.khanacademy.org/video?v=RI874OSJp1U
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10:43
Addition Rule for Probability
665 views / 0 likes - addedVenn diagrams and the addition rule for probability More free lessons at: http://www.khanacademy.org/video?v=QE2uR6Z-NcU
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22:48 Popular
Probability - Quantum and Classical
735 views / 0 likes - addedThe Law of Large Numbers and the Central Limit Theorem. Probability explained with easy to understand 3D animations. Correction: Statement at 13:00 should say "very close" to 50%.
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16:52 Popular
Conditional Probability and Combinations
754 views / 0 likes - addedProbability that I picked a fair coin given that I flipped 4 out of 6 heads. More free lessons at: http://www.khanacademy.org/video?v=xw6utjoyMi4
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02:56
Simple Probability
509 views / 0 likes - addedu08_l4_t1_we1 Simple Probability More free lessons at: http://www.khanacademy.org/video?v=yUaI0JriZtY Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
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11:28 Popular
Math Antics - Basic Probability
1,085 views / 0 likes - addedThis is a re-upload to correct some terminology.In the previous version we suggested that the terms odds and probability could be used interchangeably. While this may be okay in casual conversation (since both have to do with the likelihood of an event),
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10:02
Probability with Playing Cards and Venn Diagrams
596 views / 0 likes - addedProbability of compound events. The Addition Rule. Common Core Standard 457 S-CP.7 More free lessons at: http://www.khanacademy.org/video?v=obZzOq_wSCg
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02:23
Probability of Dependent Events
568 views / 0 likes - addedU12_L2_T4_we2 Probability of Dependent Events More free lessons at: http://www.khanacademy.org/video?v=l9ft9jpriNA Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
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10:51
Probability of Dependent Events 2
489 views / 0 likes - addedU12_L2_T4_we3 Probability of Dependent Events 2 More free lessons at: http://www.khanacademy.org/video?v=ccrYD6iX_SY Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
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05:09 Popular
Can You Solve The Snake Eyes Probability Riddle?
835 views / 0 likes - addedYou close your eyes and roll a pair of dice. The casino dealer announces that at least one of the rolls is showing a 1.What is the probability that both dice are showing a 1? Watch the video for the solution. (Snake eyes is a term for rolling a pair of 1s
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10:20 Popular
SURPRISING Coin Flipping Probability - Flips To HH Versus HT
873 views / 0 likes - addedWhat is the expected number of coin flips until you get two heads in a row (HH)? What is the expected number of coin flips until you get a heads followed by a tails (HT)? The video presents the solution and an intuitive explanation for this probability ri
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07:47 Popular
Can You Solve The Probability The Newborn Is A Boy? Many Fail This Interview Question
821 views / 0 likes - addedThis problem has been asked in job interviews. On the morning of January 1, a hospital nursery has 3 boys and some number of girls. That night, a woman gives birth to a child, and the child is placed in the nursery. On January 2, a statistician conducts a
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09:54
Probability (part 2)
649 views / 0 likes - addedLet's flip a coin. More free lessons at: http://www.khanacademy.org/video?v=6E_NVnboMB8
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10:00
Probability (part 4)
582 views / 0 likes - addedMore on free throws. More free lessons at: http://www.khanacademy.org/video?v=W581OBM9rAY
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05:23 Popular
Probability (part 8)
748 views / 0 likes - addedIntroduction to Bayes' Theorem More free lessons at: http://www.khanacademy.org/video?v=VVr8snbaxZg
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10:36
Probability and Combinations (part 2)
626 views / 0 likes - addedMaking at least 3 out of 5 free throws. More free lessons at: http://www.khanacademy.org/video?v=W7DmsJKLoxc
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04:22 Popular
Term Life Insurance and Death Probability
760 views / 0 likes - addedUnderstanding an insurance company's sense of my chances of dying. More free lessons at: http://www.khanacademy.org/video?v=NSSoMafbBqQ
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13:43 Popular
IIT JEE Complex Root Probability (part 1)
703 views / 0 likes - added2010 Paper 1 problem 31 Math (part 1) More free lessons at: http://www.khanacademy.org/video?v=bV_HSZ_W0nk
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08:24 Popular
IIT JEE Complex Root Probability (part 2)
775 views / 0 likes - added2010 Paper 1 problem 31 Math (part 2).avi More free lessons at: http://www.khanacademy.org/video?v=S3KMyYYGuPE
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03:23 Popular
Galton Board
737 views / 0 likes - addedThe Galton Board is a 7.5” by 4.5” desktop probability machine. This device brings to life the statistical concept of normal distribution. As you rotate the Galton Board on its axis, you set into motion a flow of steel beads that bounce with e
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16:13
2003 AIME II Problem 13
570 views / 0 likes - addedProbability of moving to a vertex More free lessons at: http://www.khanacademy.org/video?v=vKMNRcctwL4
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12:04
Introduction to Random Variables
506 views / 0 likes - addedIntroduction to random variables and probability distribution functions. More free lessons at: http://www.khanacademy.org/video?v=IYdiKeQ9xEI
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10:00
Getting Exactly Two Heads (Combinatorics)
636 views / 0 likes - addedA different way to think about the probability of getting 2 heads in 4 flips More free lessons at: http://www.khanacademy.org/video?v=8TIben0bJpU
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06:52
Exactly Three Heads in Five Flips
664 views / 0 likes - addedProbability of exactly 3 heads in 5 flips using combinations More free lessons at: http://www.khanacademy.org/video?v=udG9KhNMKJw
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14:28
Sampling Distribution Example Problem
516 views / 0 likes - addedFiguring out the probability of running out of water on a camping trip More free lessons at: http://www.khanacademy.org/video?v=0ZstEh_8bYc
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09:20
Getting At Least One Heads
601 views / 0 likes - addedProbability of getting at least one heads in multiple flips of a fair coin More free lessons at: http://www.khanacademy.org/video?v=mkyZ45KQYi4
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07:05 Popular
LeBron asks about the chances of making 10 free throws
713 views / 0 likes - addedLeBron James asks Sal how to determine the probability of making 10 free throws in a row More free lessons at: http://www.khanacademy.org/video?v=iMqCSgqzmiQ
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05:37 Popular
Who Shares Your Birthday?
849 views / 2 likes - addedTweet this ⇒ http://bit.ly/OKTBSbday Share on FB ⇒ http://bit.ly/OKTBSbdayFB Click here if you’d like to subscribe: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ In case you have a strange new desire to get an IOTBS shirt: http://store.dftba.com
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04:55
Hardy's Paradox | Quantum Double Double Slit Experiment
460 views / 0 likes - addedNeed a last minute holiday gift idea? Go to https://www.brilliant.org/minutephysics for 20% off a premium subscription to Brilliant (can be given as a gift). Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters
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14:31 Popular
BEST Guess Who Strategy- 96% WIN record using MATH
772 views / 0 likes - addedHere is a strategy for winning 96% of your competitive Guess Who games. Now all you need is a time machine to return to 1991 and CRUSH Jeff Lee in the 5th grade Guess Who Championships. FREE trial for Lynda.com- http://bit.ly/LyndaMarkRober MUSIC- 0:21- M
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18:41
ET Is (probably) Out There -- Get Ready - Seth Shostak
589 views / 0 likes - addedSETI researcher Seth Shostak bets that we will find extraterrestrial life in the next twenty-four years, or he'll buy you a cup of coffee. At TEDxSanJoseCA, he explains why new technologies and the laws of probability make the breakthrough so likely -- an
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09:44
The 50/50 Problem You Won't Believe
192 views / 0 likes - addedGet the Vsauce Curiosity Box: https://www.curiositybox.com/vsauce2Probability is one of the clearest, more straightforward disciplines within mathematics. Unfortunately, almost nothing in mathematics is murkier and more misleading than probability. WHAT?!
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24:00 Popular
Generating π from 1,000 random numbers
824 views / 0 likes - addedWatch me calculate pi by rolling 1,000 random numbers on two d120 dice. All in the name of celebrating Pi Day 2017. You can watch all 500 rolls of the dice! https://www.youtube.com/watch?v=ESU4KdRLzu0 Here are some proofs that the probability of two rando
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05:11 Popular
What Is Obesity? - Mia Nacamulli
864 views / 1 likes - addedView full lesson: http://ed.ted.com/lessons/what-is-obesity-mia-nacamulli Obesity is an escalating global epidemic. It substantially raises the probability of diseases like diabetes, heart disease, stroke, high blood pressure, and cancer. But what is the
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13:15
The Problem Newton Got Wrong
377 views / 0 likes - addedWatch my newest video, "Could a Toothpaste Sandwich Brush Your Teeth?": https://youtu.be/OdeiWhETqQYGo to https://buyraycon.com/vsauce2 for 15% off your order!Brought to you by Raycon.Isaac Newton was right about everything from gravity to the calculus, b
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08:27
Can You Solve The 3 Cards Riddle?
674 views / 0 likes - addedThere are 3 cards in this problem. One card is blue on both sides, another is red on both sides, and the last is red on one side and blue on the other. The cards are put in a bag and I pick one at random. Without looking at the colors on the card, I place
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04:31 Popular
Can You Solve The Frog Riddle? - Derek Abbott
1,711 views / 2 likes - addedView full lesson: http://ed.ted.com/lessons/can-you-solve-the-frog-riddle-derek-abbott You’re stranded in a rainforest, and you’ve eaten a poisonous mushroom. To save your life, you need an antidote excreted by a certain species of frog. Unfortunately, on
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05:07 Popular
Check your intuition: The birthday problem - David Knuffke
886 views / 0 likes - addedView full lesson: http://ed.ted.com/lessons/check-your-intuition-the-birthday-problem-david-knuffke Imagine a group of people. How big do you think the group would have to be before there’s more than a 50% chance that two people in the group have the same
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13:40 Popular
BEST Way To Play Memory (Card Game) - WIN Using Math
944 views / 0 likes - addedThe card game of memory (aka concentration) is a children's game to test visual recall. Strategically you can figure out the best move by doing probability calculations. This video explains the best possible way to play the game mathematically. You can le
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15:04
The Easiest Problem Everyone Gets Wrong
359 views / 0 likes - addedWatch my newest video, "Could a Toothpaste Sandwich Brush Your Teeth?": https://youtu.be/OdeiWhETqQYWe know how difficult the Monty Hall Problem is for so many people even after theyre shown all the math behind the best possible strategy. Its basic probab
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07:39 Popular
Can You Solve The Alien Extinction Riddle? Hard Job Interview Question
862 views / 0 likes - addedA single alien lands on Earth. Every day after that, each alien on Earth undergoes a transformation, which could be any of the four equally likely events: (a) the alien dies, (b) the alien does nothing, (c) the alien replicates itself (2 aliens total), (d
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08:45 Popular
Confidence Intervals - Statistics
781 views / 0 likes - addedLearn how to compute confidence intervals in this easy to follow statistics video. I also provided the links for my other statistics videos as well Confidence Intervals - with 't' value https://www.youtube.com/watch?v=UmAJJtEo6cQ Hypothesis Testing - http
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01:18 Popular
Can You Make 4 Triangles From 6 Matches?
971 views / 0 likes - addedCan you use 6 matches to make 4 triangles of equal size and equal shape? This is harder than it sounds! Give it a try before watching the video for a solution. If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions
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04:22 Popular
Impossible Algebra Problem
1,233 views / 0 likes - addedThis problem is making the rounds. Can you place numbers in the four boxes so all the equations are true? Blog post (text/image explanation): http://wp.me/p6aMk-4up If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecis
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03:25 Popular
Can You Solve This? AA + BB + CC = ABC
2,462 views / 0 likes - addedIf AA + BB + CC = ABC, what are the values of A, B, and C? All the digits are distinct and positive. Watch the video for a solution. Blog (text explanation): http://wp.me/p6aMk-4Cm If you like my videos, you can support me at Patreon: http://www.patreon.c
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07:55 Popular
Confidence Intervals - Using T Distribution
718 views / 0 likes - addedLearn how to compute confidence intervals using a t-distribution in this easy to follow statistics video. I also provided the links for my other statistics videos as well Confidence Intervals - with 'z' value https://www.youtube.com/watch?v=lwpobQmUTd8 Hy
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04:42
How Warren Buffett Tried To Trick Bill Gates In A Dice Game
682 views / 0 likes - addedWarren Buffett once challenged Bill Gates to a dice game similar to this one. How would you play the game? Blog post (text explanation) http://wp.me/p6aMk-4ro Source The dice numbers and the story are described at Microsoft Research's website for non-tran
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02:57 Popular
Banana Proportionality | Rated And Proportional Relationships | 7th Grade | Khan Academy
1,603 views / 0 likes - addedA proportionality problem about eating bananas Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-rel/e/analyzing-and-identifying-proportional-rela
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01:46 Popular
Movie Ticket Proportionality | 7th Grade | Khan Academy
1,004 views / 0 likes - addedWhen going to the movies, is the price you pay proportional to the number of tickets you buy? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-re
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02:39 Popular
Proportionality Between Side Length And Perimeter | 7th Grade | Khan Academy
839 views / 0 likes - addedIs the perimeter of a square proportional to the side length of the square? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-rel/e/analyzing-and-
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01:57 Popular
I Will Read Your Mind - Math Magic Trick
1,242 views / 2 likes - addedPick a 2 digit number. Got it? Now and add up the digits. Subtract that from your original number. Look up the resulting number in the table. Can I figure out the symbol you are looking at? This video predicts your symbol and explains why this math trick
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05:57
How To Split A Cake Fairly Using Math
680 views / 0 likes - addedHow can 2 people split up a cake, knowing that each person wants to get a larger piece than the other? What about 3 people, or even N people? This is an example of a fair division problem from game theory. There are many cake-cutting algorithms to produce
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03:46 Popular
Testing Whether Area Is Proportional To Side Length | 7th Grade | Khan Academy
1,179 views / 0 likes - addedIs the volume of a square proportional to the side length of the square? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-rel/e/analyzing-and-ide
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06:24 Popular
The Seemingly Impossible Escape Logic Puzzle
1,435 views / 0 likes - addedAn evil logician takes Alice and Bob captive. They have a chance to escape if they can deduce the total number of trees in the prison. Can they figure it out? Source of puzzle wu: riddles forum https://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi?board
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04:52 Popular
Can You Solve The Two Rope Puzzle?
705 views / 0 likes - addedYou have two ropes and a lighter. Each rope burns in 60 minutes, but the ropes do not burn at a constant rate. How can you measure 45 minutes by burning the ropes? Some of you might have heard this problem before. If so, try this variation: how can you me
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18:38
Seth Shostak: ET Is (probably) Out There — Get Ready
514 views / 0 likes - addedSETI researcher Seth Shostak bets that we will find extraterrestrial life in the next twenty-four years, or he'll buy you a cup of coffee. At TEDxSanJoseCA, he explains why new technologies and the laws of probability make the breakthrough so likely — and
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03:26
Why Are Your Fingerprints Unique?
355 views / 0 likes - addedTry Dashlane Premium free for 30 days: https://www.dashlane.com/MinuteEarth. Use the coupon code ‘MinuteEarth’ to get 10% off Dashlane Premium. Because of the chaotic way fingerprints develop and the multiplying effect of compound probability, it's basica
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06:24 Popular
Can You Solve The Chameleon Riddle?
994 views / 0 likes - addedA museum has 13 blue, 15 red, and 17 green chameleons. Whenever two chameleons of different colors meet, they both change into the color of the other chameleon (if blue and red met, for example, they would both turn green). As the chameleons mingle, is it
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09:08
Quantum Mechanics - Part 2: Crash Course Physics #44
605 views / 0 likes - addede=mc2... it's a big deal, right? But why? And what about this grumpy cat in a box and probability? In this episode of Crash Course Physics, Shini attempts to explain a little more on the topic of Quantum Mechanics. *** Get your own Crash Course Physics mu
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07:52 Popular
Find The 10 Digit Number Classic Puzzle And Solution
878 views / 0 likes - addedI'm thinking of a 10 digit number that uses the each digit 0 to 9 exactly once and where the number formed by the first n digits is divisible by n. What could my number be? The video explains how to find the answer using tests for divisibility. Blog post:
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03:00
Multiply Numbers By Drawing Lines
617 views / 0 likes - addedGow to multiply numbers by drawing lines. Get the Multiply By Lines Book! https://www.amazon.com/gp/product/1500866148/ If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions Connect on social media. I update each s
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04:13 Popular
Adults Stumped By Geometry Problems For 10 Year Olds. Can You Solve Them?
838 views / 0 likes - addedThese homework problems were given to 10 year old children (Year 5) in England (Glossop, Derbyshire) and they were posted to Facebook when some adults found them to be difficult. One person claimed the problems were impossible to solve. Can you figure the
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07:10
TOUGH Interview Question - Ways To Give 11 Coins To 3 People
602 views / 0 likes - addedHow many ways can you divide 11 coins to 3 people? How many ways are there if each person has to get at least 1 coin? This puzzle is an example of a technical interview question. The video demonstrates the solution, which indicates the number of non-negat
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06:07
Will there be another pandemic in your lifetime?
370 views / 0 likes - addedExplore the probability of a future pandemic and the steps we can take to reduce its destructiveness.--We tend to think of pandemics as unlikely events, but disease outbreaks are surprisingly common. Over the past 400 years, the longest stretch of time wi
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05:45
Whos Eating All The Spiders?
42 views / 0 likes - addedStart learning with your free 30-day trial of Brilliant at https://brilliant.org/MinuteEarthThe average human, in theory, eats 3 spiders a year. If you're not eating them and I'm not eating them, who is?LEARN MORE**************To learn more about this top
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02:57 Popular
Viral Facebook Math Problem
1,279 views / 1 likes - addedThis problem has over 2 million comments on Facebook and is getting coverage in mainstream media and blogs. Can you figure out this Facebook fruit algebra puzzle involving apples, bananas, and coconuts? The video presents what many people consider to be t
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03:31 Popular
How Logical Are You? The Irrationality Illusion Tricks Most
800 views / 0 likes - addedThis video relates a cognitive bias ("irrational" decision) to an optical illusion (picture at 1:45). For more, check out my new book, "The Irrationality Illusion: How to Make Smart Decisions And Overcome Bias" http://amzn.to/1o3FaAg Blog post (text and i
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16:36
The Number Illusion You Won't Believe
270 views / 0 likes - addedWatch my newest video, "Could a Toothpaste Sandwich Brush Your Teeth?": https://youtu.be/OdeiWhETqQYSometimes math is so beautifully tricky, and presented in such a subtle way, that its virtually indistinguishable from magic. Welcome to The Kruskal Count.
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02:45
The Day After Tomorrow Is Yesterday Riddle. Can You Solve It?
694 views / 0 likes - addedThis puzzle is popular on Facebook and many other sites. "When the day after tomorrow is yesterday, then today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What day is today?" Can you solve this tri
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02:23
This SAT Math Question Has A Mistake
653 views / 0 likes - addedThis question appeared on the October 1980 SAT exam. Like all questions, it was supposed to have exactly one correct answer. However the test-makers made a mistake. Can you figure out what they did wrong? Blog post (text explanation): http://wp.me/p6aMk-4
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03:33 Popular
Can You Solve This Intelligence Test? Viral Facebook Puzzle
730 views / 0 likes - addedIf 6 + 4 = 210, and 9 + 2 = 711, what is the rule to combine numbers? This "intelligence test" has been shared more than 3 million times on Facebook. On Twitter people claim solving it means you have an IQ of more than 150 (genius level). In this video I
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06:57
When Is Christmas? Mentally Convert Date To Day Of The Week
524 views / 0 likes - addedJanuary 1, 2016 is a Friday. When will Christmas be in 2016? What about Christmas in 2055? You can do this in your head! Blog post (text explanation): http://wp.me/p6aMk-4qQ Doomsday Rule (previous video): https://www.youtube.com/watch?v=UsStBxY9STw Calcu
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08:12
Fair Dice (Part 2) - Numberphile
498 views / 0 likes - addedProbability expert Professor Persi Diaconis (Stanford University) talking about dice. Part 1: https://youtu.be/G7zT9MljJ3Y More dice videos: http://bit.ly/Dice_Videos More Persi Diaconi videos: http://bit.ly/Persi_Videos Diaconis/Keller paper on fair dice
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05:39 Popular
Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD
785 views / 0 likes - addedThanks to Eric from Miami for suggesting this problem and sending a solution! The diagram shows a quadrilateral ABCD with the values for some angles and the length of AB. Can you figure out the area of ABCD? Subscribe: https://www.youtube.com/user/MindYou
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05:55 Popular
"Impossible" Logic Puzzle - How Many Liars Are At The Party?
802 views / 0 likes - addedA party has 100 people who are either liars are truth tellers. Liars always lie and truth tellers always say the truth. After the party you ask each person, "How many truth tellers did you shake hands with?" Each person gives a different answer from 0 to
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13:14
Fair Dice (Part 1) - Numberphile
655 views / 0 likes - addedProbability expert Professor Persi Diaconis (Stanford University) talking about dice. Part 2: https://youtu.be/8UUPlImm0dM Tadashi and Dice: https://youtu.be/zzKGnuvX6IQ More dice videos: http://bit.ly/Dice_Videos More Persi Diaconi videos: http://bit.ly/
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03:28 Popular
Flower Math Problem - Adults Stumped By Question For Kids In China
1,381 views / 2 likes - addedThis problem is said to come from a test given to a Chinese kindergarten class (5 year olds). It was posted online and caused a lot of debate as adults were stumped about the correct answer, some saying it is impossible. Can you figure it out? This video
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15:15
Moving Faster Than The Speed Of Light? Special Relativity Velocity Addition Formula
675 views / 0 likes - addedIf train A is moving towards train B, and each train moves at 75% the speed of light (relative to the ground), will an observer on train A think that train B is moving at 150% the speed of light? But nothing moves faster than the speed of light, so what i
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04:53
Can You Solve The Friendship Riddle?
542 views / 0 likes - addedIn a group of 6 people, you might find that some people are friends on Facebook, or you might find out that no one is friends on Facebook. Show that there is always a group of 3 people in which either: (a) all 3 people are mutual friends or (b) the 3 peop
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01:49 Popular
This Matchstick Puzzle Is
843 views / 1 likes - addedThis classic matchstick/toothpick puzzle is making the rounds because it is supposedly "extremely hard" for adults. Can you make 3 squares by moving 3 matchsticks? You cannot break any of the sticks, the resulting squares must be of equal size, and each t
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07:49 Popular
Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained
1,061 views / 0 likes - addedThis problem has been shared millions of times on Twitter/Facebook with the claim "99% fail" to solve it and that only a genius could find the correct answer. If 9 = 72, 8 = 56, 7 = 42, 6 = 30, 5 = 20, then 3 = ? In this video I explain what many people b
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06:01 Popular
Can You Solve The Viral 1 + 4 = 5 Puzzle? The Correct Answer Explained
11.8k views / 1 likes - addedThis problem was shared on Facebook with the claim that only one in a thousand could figure it out. It went viral and generated over 3 million comments. Here is the problem. If 1 + 4 = 5, 2 + 5 = 12, 3 + 6 = 21, what is 8 + 11 = ? This video presents what
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07:25 Popular
Can You Solve The Race To December 31 Riddle?
708 views / 0 likes - addedHere's a fun game you can play with another person. The game starts on January 1. Each of two players takes turns calling out another date. The new date has to be a later date in the year with either the same month OR the same day (from January 1, a playe
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03:21 Popular
Can You Solve A Puzzle That Fooled Richard Feynman?
703 views / 0 likes - addedWhat is the radius of the circle, in simplest terms involving a, b, and c? I read that even the great mind Richard Feynman made a mistake. Watch the video to learn the common mistake and what the correct answer is. Source Feynman story http://web.media.mi
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05:48
What Is The Area? "You Should Be Able To Solve This"
500 views / 0 likes - addedThanks to Reio in Romania for emailing me this fun problem! What is the area? This puzzle was shared with the tagline "you should be able to solve this." Solution to 5th grade Chinese challenge problem https://youtu.be/OuJQaxZvlYs My blog post for this vi
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03:17
Can YOU Solve It? This Question Stumped 75% Of PhD Economists
602 views / 0 likes - addedIntroductory economics courses cover the concept of an opportunity cost. Can you figure out the opportunity cost for the problem in the video? This video presents a question that surprisingly more than 75% of PhD economists did not answer correctly. Paper
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32:44 Popular
The Power of Mathematical Visualization | The Great Courses
1,063 views / 0 likes - addedhttps://www.thegreatcoursesplus.com/show/the_power_of_mathematical_visualization?utm_source=US_SocialMedia&utm_medium=SocialMediaEditorialYoutube&utm_campaign=138569 The Power of Mathematical Visualization teaches you these vital problem-solving skills in
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04:52 Popular
How Small is an Atom?
831 views / 0 likes - addedThe size of an atom is only a few angstroms at most - there are 10 billion angstroms in 1 meter. This video also goes the basic parts of an atom (protons, neutrons, and electrons) and why the traditional model of the atom is not correct. Electrons are unp
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09:11 Popular
Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer
843 views / 0 likes - addedStart with a unit square (a rectangle with both sides equal to 1, call it R1). Attach a rectangle of area 1 to its right side, then attach a rectangle of area 1 to its top. The border of this new shape is another rectangle, call it R2. We can repeat the p
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03:48 Popular
Can You Solve This Harvard Admissions Question? Algebra Problem, 1869
1,454 views / 0 likes - addedThe Harvard admissions exam in 1869 included this algebra problem: "A man bought a watch, a chain, and a locket for $216. The watch and locket together cost three times as much as the chain, and the chain and locket together cost half as much as the watch
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08:05 Popular
Can You Solve The Hardest Easy Geometry Problem?
1,259 views / 1 likes - addedIn the figure, what is the value of angle x? This problem is known as Langley's Adventitious Angles. It is also known as the hardest easy geometry problem because it can be solved by elementary methods but it is notoriously difficult to work out. Can you
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05:57 Popular
Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"
1,118 views / 1 likes - addedThis problem was given to Primary 6 (age 11-12) students in Singapore. What is the area of the shaded region in the video, which consists of the region bounded by 4 quarter circles in a 3x3 grid of squares, and each square has a side length of 4? The shad
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03:51 Popular
Can You Solve This MIT Admissions Question? Geometry Problem, 1869
936 views / 0 likes - addedThe Massachusetts Institute of Technology (MIT) is one of the top ranked universities in the world. This question appeared on its admissions exam nearly 150 years ago. "The perpendicular dropped from the vertex of the right angle upon the hypotenuse divid
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06:24
Can You Solve The Missing Sock Puzzle?
611 views / 0 likes - addedA statistician keeps a simple wardrobe. He only purchases pairs of black socks and white socks, and he keeps all of the socks in a pile in the drawer. Recently one of the socks was lost in the laundry. The socks have a mathematical property. If you select
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02:51 Popular
The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained
1,714 views / 2 likes - addedA lot of people are arguing over the correct answer to this algebra problem involving horses, horseshoes, and boots. A Facebook post with this problem has over 500,000 comments. Can you figure it out? In this video I explain the correct answer. Blog post:
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11:27 Popular
Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained
3,036 views / 1 likes - addedIf 11x11=4 and 22x22=16, what is 33x33=? This puzzle has been shared with the claim that only geniuses can solve it. It has gotten millions of views on the internet and Facebook as people have debated the correct answer. In this video I present what many
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03:16 Popular
Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer
990 views / 0 likes - addedWhat is angle A in the star-shaped figure? This problem appeared on the 1999 AMC 8 test (intended for 8th grade students in the US). Approximately 75% of test-takers did not mark the correct response. Can you figure it out? Watch the video for a solution.
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05:26
Can You Solve The Red Ball Lottery Puzzle?
664 views / 0 likes - added(Same video without the music: https://youtu.be/sz5oLEpc8xE) This problem involves 100 red balls, 100 blue balls, and 2 urns. First you distribute all the balls between the 2 urns, placing at least 1 ball in each urn. Next, you select an urn at random, an
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07:21 Popular
Can You Solve The Magical Pond Puzzle?
1,020 views / 1 likes - added(Same video with music: https://youtu.be/nF-Gpk0ZpRk) You visit a shrine that has 3 temples. Before each temple, you have to swim in a magical pond. Your path is pond-temple1-pond-temple2-pond-temple 3. Each time you swim, the pond magically triples the n
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02:37 Popular
Adults Stumped By Maths Questions For 15 Year Olds. Can You Solve Them?
787 views / 0 likes - addedHow hard are math tests? A survey asked 2,000 UK adults to answer sample GCSE test questions intended for 15 year old students. On average, the survey questions were missed by about 40% of adults. Can you solve them? The video presents 2 questions that ma
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03:09
Can You Solve The Marriage Logic Problem? 80% Fail
669 views / 0 likes - addedSurveys have found 80 percent get this logic problem wrong. Alice is looking at Bob, and Bob is looking at Charlie. Alice is married; Charlie is not. Is a married person looking at an unmarried person? Answer choices are A) Yes, B) No, and C) Cannot be de
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04:13 Popular
Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle
895 views / 0 likes - addedA marshmallow has the shape of a cylinder with diameter 5 and height 3. A dessert is made with 24 marshmallows: there are two stacked layers of marshmallows, and each layer has 3 rows of 4 marshmallows. The gaps between the marshmallows are filled with ch
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05:33 Popular
What is 6÷2(1+2) = ? The Correct Answer Explained
876 views / 0 likes - addedWhat is 6÷2(1+2) = ? This problem went viral and generated millions of comments on Facebook, Twitter, YouTube and social media sites. I explain how to get the correct answer by using the modern interpretation of the order of operations. I also explain how
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02:57 Popular
Can You Solve This Crazy Equation? Ramanujan's Radical Brain Teaser
1,086 views / 0 likes - addedIn 1911, Srinivasa Ramanujan posed this problem involving an infinite nested radical (a never-ending expression that has square roots inside of square roots). Can you figure out how to simplify the equation? The video presents an intuitive solution. Techn
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03:54 Popular
What's The Best Soup Can Size? The Optimal Cylinder Puzzle
791 views / 0 likes - addedA cylindrical can with volume V can be made in different ways. The cylinder can be wide and short (large radius and small height), or it can be narrower and taller (small radius and larger height). Which shape uses the least material? That is, which can h
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07:40 Popular
Can You Solve The 21 Flags Game From Survivor?
876 views / 1 likes - addedContestants on the TV show "Survivor" faced off in a series of challenges for a grand prize of $1 million. Most of the challenges were physical like hiking many miles or diving underwater. But one challenge was mathematical. The game had 21 flags and cont
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08:51 Popular
The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)
761 views / 0 likes - addedThey say only geniuses can solve this puzzle, and this time they are correct. Thanks to all patrons! Special thanks to: Shrihari Puranik Yildiz Kabaran Kyle My blog post for this video https://wp.me/p6aMk-82U Sources https://puzzling.stackexchange.com/que
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13:41 Popular
Entropy: Embrace the Chaos! Crash Course Chemistry #20
777 views / 0 likes - addedLife is chaos and the universe tends toward disorder. But why? If you think about it, there are only a few ways for things to be arranged in an organized manner, but there are nearly infinite other ways for those same things to be arranged. Simple rules o
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09:50 Popular
Can You Solve This 6th Grade Geometry Problem From China?
1,256 views / 1 likes - addedWhat is the total area of the red spots? The diagram involves a rectangle with dimensions of 10 and 20. Inside the rectangle one of its diagonals is connected. There are two circles of equal size that are tangent to each other and the rectangle. The video
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05:52
Can You Solve The "MEANEST" SAT Test Question Ever?
690 views / 0 likes - addedOn the SAT exam, you have about 2 minutes to read and solve each math question. This one about averages can send you in a loop, unless you approach it systematically. In the video I also explain a shortcut to help you solve this type of problem quickly. S
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02:06 Popular
Can You Solve The Viral Matchstick Puzzle 6 + 4 = 4?
3,452 views / 0 likes - addedCan you fix 6 + 4 = 4 by moving 1 matchstick? This problem has gone viral on Facebook, with one post having over 400,000 shares. The ground rules are you cannot break a stick, it should be an equality (=), and you have to use 7-segment numbers (the block
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06:08
What Is Luck?
395 views / 0 likes - addedTake the 2017 PBS Digital Studios survey! https://www.surveymonkey.com/r/pbsds2017 ↓ More info and sources below ↓ Is luck real? It might feel like a mystical force tugging us toward good or bad fortune, but it turns out luck is really where probability r
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06:18 Popular
Can You Solve The Diluted Wine Puzzle?
754 views / 1 likes - addedA servant has a method to steal wine. He removes 3 cups from a barrel of wine and replaces it with 3 cups of water. The next day he wants more wine, so he does the same thing: he removes 3 cups from the same barrel (now with diluted wine) and replaces it
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04:30 Popular
Adults Are Arguing About This 3rd Grade Math Problem
883 views / 0 likes - added"If Sue runs around the track twice, and John runs around the track four times more than Sue, how many times does John run around the track?" This problem was given to 3rd graders. A parent disagreed with the answer the teacher was marking. After it was p
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11:57
The Wallis Formula For π
579 views / 0 likes - addedStart with the pair of fractions (2/1)(2/3). Now increment each number by 2 to get the pair of fractions (4/3)(4/5). Repeat this to get the next pair, and repeat this infinitely many times. If you then multiply all the fractions, you get a marvelous value
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09:16 Popular
Quantum Entanglement & Spooky Action At A Distance
871 views / 0 likes - addedDoes quantum entanglement make faster-than-light communication possible? What is NOT random? http://bit.ly/NOTrandoVe First, I know this video is not easy to understand. Thank you for taking the time to attempt to understand it. I've been working on this
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17:22
How to predict random numbers
210 views / 0 likes - addedSo it's been almost 2 years since I said the random-number-machine follow-up video was coming "soon", and it's finally time! (Combined with a fun bit of math regarding perfect shuffles in reply to a fascinating Matt Parker video)If you take a histogram of
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59:03
Christmas Lectures 2019: How to Get Lucky - Hannah Fry
105 views / 0 likes - addedIn the first lecture of the 2019 Christmas Lectures, Hannah Fry explores how mathematical thinking and probability can allow us to understand and predict complex systems - even helping us to make our own luck.Watch more Christmas Lectures: http://www.rigb
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12:53
The Many Worlds of the Quantum Multiverse | Space Time | PBS Digital Studios
576 views / 1 likes - addedIs our universe a definitive single reality or is it merely one within an infinitely branching multiverse? Be sure to check out Physics Girl’s Dianna Cowern for more awesome science https://www.youtube.com/c/physicsgirl Get your own Space Time tshirt at
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07:45
The Monty Hall Problem - Christmas Lectures with Ian Stewart
514 views / 0 likes - addedIan Stewart explains the Monty Hall problem and its solution. Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Monty Hall problem became infamous in the 1990s where newspaper columnist and puzzle solver Marilyn vos Savant offered a solu
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05:27 Popular
Can You Solve The Mind-Bending Self-Counting Sentence Riddle?
944 views / 0 likes - added"In this sentence, the number of occurrences of the digit 0 is __, of the digit 1 is __, of the digit 2 is __, of the digit 3 is __, of the digit 4 is __, of the digit 5 is __, of the digit 6 is __, of the digit 7 is __, of the digit 8 is __, and of the d
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05:11 Popular
Could the Earth be swallowed by a black hole? - Fabio Pacucci
870 views / 3 likes - addedDownload a free audiobook version of "The Hitchhiker's Guide to the Galaxy" and support TED-Ed's nonprofit mission: https://adbl.co/2xqDYxY Check out our full book recommendation: https://shop.ed.ted.com/products/a-hitchhikers-guide-to-the-galaxy View ful
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06:37
The right way to play Monopoly
293 views / 0 likes - addedHow do you win Monopoly? And how do you keep it fun at the same time?Subscribe to our channel! http://goo.gl/0bsAjOIs there a right way to play Monopoly?Brian Valentine takes a stab at the answer he was the United States representative to the 2015 World M
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07:15
What Did John Snow Know About Cholera? - with James Grime
371 views / 0 likes - addedPhysician John Snow famously figured out the cause of a cholera outbreak using maths and statistics, and thereby helped to disprove the miasma theory of disease - that people get ill from 'bad air'.Subscribe for regular science videos: http://bit.ly/RiSub
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06:26
Are We All Related?
495 views / 0 likes - addedThis is part 3 of our special series on Human Ancestry! Watch the entire series here ►► http://bit.ly/OKTBSHuman ↓↓↓More info and sources below ↓↓↓ In part 3 of our special series on human ancestry, we investigate how closely related we all really are. Ba
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03:47
At-Home DNA Tests Might Not Be as Accurate as You Think...
522 views / 0 likes - addedDNA tests are a popular resource for people wanting to understand their ancestry and disease probability. But how accurate are these tests? We Got Our DNA Tested, Here's How It Actually Works - https://youtu.be/dbiv6BAmdF4 Sign Up For The Seeker Newslette
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03:45 Popular
Can you outsmart this logical fallacy? - Alex Gendler
1,298 views / 1 likes - addedExplore the psychology of the cognitive bias known as the conjunction fallacy, where we assume specific conditions are more probable than general ones. --Meet Lucy. She was a math major in college, and aced all her courses in probability and statistics. W
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04:55 Popular
Fall As You Know It Is Disappearing
738 views / 0 likes - addedClimate change is slowly taking away our seasons. The first to go? Fall. Why Do People Love Pumpkin Spice Lattes So Much? ►►►► http://dne.ws/1QAKByP DNews Live Tickets Here ►►►► http://dne.ws/1Fa2OCh Read More: Fall of fall: The mellow season of autumn is
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04:37 Popular
Can We Mathematically Prove Aliens Exist?
977 views / 2 likes - addedWhat is our probability of finding aliens and how close are we to encountering them?? The answer lies somewhere in these 2 equations. Could Life On Earth Have Come From A Comet? - http://bit.ly/2aXZC0a Sign Up For The Seeker Newsletter Here - http://bit.l
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06:09
Why Did We Just Shoot A “Bullet” At An Asteroid?
405 views / 0 likes - addedWe keep sending spacecrafts to asteroids, but what makes these floating space rocks so special? Well, they could reveal the secrets about the formation of our solar system. The Mystery of Our First Interstellar Visitor Just Got More Complicated - https://
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34:35
Why You're Probably Not a Simulation
564 views / 0 likes - addedHave you ever have a dream you were so sure was real? The simulation argument challenges our very notions of reality by asking whether everything we perceive is nothing more than an elaborate computer simulation. Recently, we've even seen headlines like "
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11:01
This Is NOT 50/50
251 views / 0 likes - addedWatch my newest video, "Could a Toothpaste Sandwich Brush Your Teeth?": https://youtu.be/OdeiWhETqQYVsauce2 Store: https://represent.com/store/vsauce2The easiest fair games depend on equal, binary outcomes like flipping a coin or drawing a playing card th
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06:11
The physics of entropy and the origin of life | Sean Carroll
126 views / 0 likes - addedHow did complex systems emerge from chaos? Physicist Sean Carroll explains.Subscribe to Big Think on YouTube https://www.youtube.com/channel/UCvQECJukTDE2i6aCoMnS-Vg?sub_confirmation=1Up next, The Universe in 90 minutes: Time, free will, God, & more https
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03:57
How Do We Know Were Tired?
141 views / 0 likes - addedGo to http://Brilliant.org/SciShow to try their Applied Probability course. Sign up now and get 20% off an annual Premium subscription.Sleep is complicated. And there's still a lot we don't know about it, but zebrafish larvae are a surprisingly good place
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16:13 Popular
The Game You Win By Losing (Parrondo's Paradox)
786 views / 0 likes - addedWatch my collab with Donut Media: https://youtu.be/1RNc-2hpHP8Thanks to Donut Media for supporting Vsauce2 and having me on their channel. Go check them out and support them. They're great!While working on the interplay between thermodynamics and informat
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09:29
The Multiverse is real. Just not in the way you think it is. | Sean Carroll
101 views / 0 likes - addedWhat do physicists actually mean when they talk about the Multiverse? Sean Carroll explains.Subscribe to Big Think on YouTube https://www.youtube.com/channel/UCvQECJukTDE2i6aCoMnS-Vg?sub_confirmation=1Up next, Michio Kaku: The Multiverse Has 11 Dimensions
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07:47
The mind-bending physics of time | Sean Carroll
115 views / 0 likes - addedHow the Big Bang gave us time, explained by theoretical physicist Sean Carroll.Subscribe to Big Think on YouTube https://www.youtube.com/channel/UCvQECJukTDE2i6aCoMnS-Vg?sub_confirmation=1Up next, The Universe in 90 minutes: Time, free will, God, & more h
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10:52
Complex Behaviour from Simple Rules: 3 Simulations
199 views / 0 likes - addedA small display of some of the surprisingly intricate patterns and behaviours that can arise from relatively simple rules. More information about each of the simulations below.These simulations were made in Unity, and coded with C# and HLSL.You can find t
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09:51
This Superheavy Atom Factory Is Pushing the Limits of the Periodic Table
340 views / 0 likes - addedAs we push the Periodic Table of the Elements further and further into the unknown, its familiar columns and rows are threatening to crumble. Whats next for this science icon?Videos of the Flerov Lab courtesy of the JINR video portal - https://www.youtube
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17:45
The Riddle That Seems Impossible Even If You Know The Answer
170 views / 0 likes - addedThe 100 Prisoners Riddle feels completely impossible even once you know the answer. This video is sponsored by Brilliant. The first 200 people to sign up via https://brilliant.org/veritasium get 20% off a yearly subscription.Special thanks to Destin of Sm
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04:19
What Happens To Your Body When You Start Exercising Regularly
501 views / 0 likes - addedLeading a more active lifestyle takes time, effort, and determination, but in the end, it's really worth the shot. Here's what will happen to your body when you exercise regularly. Following is a transcript of the video. If you're thinking about leading a
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03:50
Why Are They All In Antarctica?
113 views / 0 likes - addedDownload the Tab For A Cause browser extension at https://tab.gladly.io/trees/minuteearth2/Meteorite hunters dont search for meteorites in the places most frequently peppered by them they go to Antarctica instead, because thats where they are easiest to f
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