• There's not enough space in the known universe to write out a googolplex on paper.

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  • The most popular favourite number is 7 because 7 is arithmetically unique. And it also shows up in many things in nature.It's the only number below 10 you can't multiply or divide and keep within group. For example, 5 you can multiply by 2 to get 10 (still within the 1-10 group), 6 and 8 you can divide by 2.

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  • A pizza that has radius "z" and height "a" has volume Pi × z × z × a.
  • The spiral shapes of sunflowers follow a Fibonacci sequence.

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  • Abacus is considered the origin of the calculator.

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  • Four is the only number in English that is equal to the number of letters in its name.
  • Have you ever noticed that the opposite sides a die always add up to seven ?

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  • The Birthday problem- In a room of 75 people , there is 99% probability that two people have the same birthday.
  • Zero cannot be expressed in Roman Numerals.
  • Avoiding number 4 is called Tetraphobia. It is common in East Asian countries.It is mostly attributed to the pronunciation of the word 4 being quite similar to death in Chinese, Korean, Vietnamese and Japanese. Also 4th April is considered extremely unlucky, similar to Friday the 13th in West.

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  • If you shuffle a pack of cards properly, chances are that exact order has never been seen before in the whole history of the universe.
  • 10! seconds exactly equals 6 weeks.