Question

Consider a group of kk people. Assume that each person's birthday is drawn uniformly at random from the 365 possibilities. (And ignore leap years.) What is the smallest value of kk such that the expected number of pairs of distinct people with the same birthday is at least one?

Answer 1

By Pigeon Hole Principle we need atleast 366 people to satisfy the condition

Answer 2

hey I don't know because I am a small kid