Question

A group consist of 8 persons how many committees can be formed consisting of 2 or 3 persons?​

Answer 1

Answer-

From a committee of 8 person, a chairman and a vice chairman are to be chosen in such a way that one person cannot hold more than one position.

Here, the number of ways of choosing a chairman is the permutation of 8 different objects taken 2 at a time.

Explanation-

Thus, required number of ways=8×7=56