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In a group of 23 people, the probability is just over 50% that two people will have the same birthday. For 57 people, the probability is more than 99%.

Quote from: DiscoverDave on 06/01/2010 01:17:30In a group of 23 people, the probability is just over 50% that two people will have the same birthday. For 57 people, the probability is more than 99%. Now that I would never have thought!