Source: http://en.wikipedia.org/wiki/Mathematical_coincidence

If you have a calculator, check out the value of . It is 19.99909998…

Why is it so close to the integer 20? Is it a coincidence (few things in Math are coincidence), or is it a sign of something deeper? e and Pi are two very fundamental numbers in Math, and the very fact that may well mean something.

This was observed by a few mathematicians (Conway, Sloane, Plouffe, 1988) many years ago, but till this day there is no answer.

Do give it a thought!

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