Question: For this problem, assume that a year has 365 days. (a) In how many ways can 18 people have different birthdays? (b) What is the

For this problem, assume that a year has 365 days.
(a) In how many ways can 18 people have different birthdays?
(b) What is the probability that no 2 people in a group of 18 people have the same birthday?
(c) What is the probability that at least 2 people in a group of 18 people have the same birthday?

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