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Posted by on Friday, May 25, 2007 at 9:40am.

the smallest number of people in a room where the probability of two of them having the same birthday is at least fifty percent


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The smallest class where the chance of finding two people with the same birthday is 50% or more is... a class of 23 people. (The probability is about 50.73%.)

  • math - , Wednesday, December 3, 2008 at 10:08pm

    The smallest number of people in a room where the probability of two of them having the same birthday is at least 50 percent.

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