In how many ways can a committee of 5 people which contains only teachers be formed?
6
5
4
3
none
The number of ways a committee can be formed which consists of only teachers is 6C5=6 ways
In how many ways can a committee of 5 people which contains at least 1 clerk be formed?
In how many ways can a committee of 5 people be formed, such that it contains at least 1 social worker?
In how many ways can a committee of 6 people which contains exactly 3 businessmen and 2 sweepers be formed?
In how many ways can a committee of 4 people can be chosen out of 9 people?