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Problem 1272. The almost-birthday problem.

Created by Claudio Gelmi

This is a harder version of the birthday problem. Now, you will have to determine the probability that two or more people in a randomly assembled group of n people are having their birthdays within d days of each other. As usual, ignore the leap year and assume that every day is equally probable.

Problem Group

Solution Statistics

10 correct solutions 3 incorrect solutions
Last solution submitted on Aug 07, 2013