- The symbols used for addition (+) and subtraction (-) have been around for thousands of years but it wasn't until the 16th century that most mathematical symbols were invented. Before this time math equations were written in words, making it very time consuming..
- Bill Gates began programming computers at the of age 13.
- The opposite sides of a die always adds up to 7.
- In 1642 French mathematician Blaise Pascal invented the mechanical calculator..
- You can't trademark surnames.
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