Question

Find the number of ways of choosing a team of 11 people from 15 if two particular people out of the 15 must be in the team.

Answer 1

Explanation:

If two particular people out of the 15 must be on the team, then you only have 13 left from which to choose 9.

13 C 9 = 13! / (9! 4!) = 715 ways