Problem 1267. Calculate the probability that at least two people in a group share the same birthday.

Created by Jeremy

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Last Solution submitted on Jul 29, 2022

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Massimo Zanetti on 7 Oct 2016

I assume n is the number of people in the room.....

Edward Huang on 5 Mar 2020

Although I got the solution, in the case of n=100, however, it results in 1.000, which means there MUST be at least two people share their birthday in a group of 100. Am I missing something here?

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Problem 1267. Calculate the probability that at least two people in a group share the same birthday.

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Problem 1267. Calculate the probability that at least two people in a group share the same birthday.

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