Asked by Bobbie

Fourty people are selected at random. What is the probability that none of the people in this group have the same birthday?
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Answered by Scott
there are [(40 * 39) / 2] separate pairs of people

the probability of two people not having the same birthday is (364 / 365)

the probability that none of the group have the same birthday is
... (364 / 365)^(20 * 39)
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