Permutation and Combination - General Questions

Evaluate 6C5.

From 7 men and 6 women, a committee of 6 is to be formed with exactly 3 men and 3 women. In how many ways can it be done?

From 7 men and 7 women, a committee of 5 is to be formed with exactly 3 men and 2 women. In how many ways can it be done?

From 7 men and 4 women, a committee of 4 is to be formed with exactly 2 men and 2 women. In how many ways can it be done?

Evaluate 9P3.