A three-member committee has to be formed from a group of 9 people

Q. A three-member committee has to be formed from a group of 9 people. How many such distinct committees can be formed?

(A) 27(B) 72(C) 81(D) 84

Ans: 84

Sol:

For a  formation of a three-member committee from available nine members.

The number of distinct ‘r’ committee to be formed from ‘n’ available members is given by nCr.

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