SOLUTION: What is the probability that out of a group of five people, at least two people have the same birthday? note assume that there are 365 days in a year
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Question 1139017: What is the probability that out of a group of five people, at least two people have the same birthday? note assume that there are 365 days in a year Answer by VFBundy(438) (Show Source):
You can put this solution on YOUR website! Figure out the probability that NONE of the five people have the same birthday, then subtract this result from 1.
Probability than NONE of the five people have the same birthday:
365/365 * 364/365 * 363/365 * 362/365 * 361/365 = 0.9729
Probability that at least two people have the same birthday:
1 - 0.9729 = 0.0271, or 2.71%. (That's about a 1 in 37 chance.)
