Thursday, April 15, 2010

A Birthday puzzle...

What can be the count of people in a group, given the probability of two people sharing a common birthday?

Let us assume that the correct count is n,

permutation of 365, n => p(365, n) / 365 ^ n = 1/2; Amazingly, the approximate value of n, satisfies this is 23 !!! no way related to the trivial answer 365 / 2 :)


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