- Fibonacci numbers are named after Italian mathematician Leonardo of Pisa (better known as Fibonacci) who introduced them to Western Europe after they had earlier been described by Indian mathematicians. They are related to the golden ratio and proceed in the following order: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, .... Can you see the pattern?.
- The only continent with no active volcanoes is Australia.
- The most abundant metal in the Earth's crust is aluminum.
- The rarest type of diamond is green.
- The average age at which America's presidents have taken office is 54.
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