Question

five friends choose from among 10 movies to watch. what is the probability that at least 2 of them choose the same movie?

Answer 1

I believe the answer is 20%

Answer 2

Explanation:

P(at least 2 choose the same movie)

= 1 - P(all choose a different movie)

= 1 - 10/10 * 9/10 * 8/10 * 7/10 * 6/10 = 0.6976