What is the probability that exactly four people

Reference no: EM131851791

From a population of people with unrelated birthdays, 30 people are selected at random. What is the probability that exactly four people of this group have the same birthday and that all the others have different birth-days (exactly 27 birthdays altogether)? Assume that the birthrates are constant throughout the first 365 days of a year but that on the 366th day it is one-fourth that of the other days.

Reference no: EM131851791

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