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OpenStudy (anonymous):
(probability) How many people do you need to gather to be sure that at least two of them have birthdays in the same month?
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OpenStudy (perl):
Because there are 12 months, 12 of the people could have birthdays in all 12 months. But when you add 1 more person, you know they must have a birthday in a month that somebody else has
OpenStudy (anonymous):
So 13 people?
OpenStudy (perl):
I can't give the answer
OpenStudy (anonymous):
K, but thanks,
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