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A committee of (4) is to be formed from (11) members excluding one fixed member. How many ways are there?

Answer and explanation

Correct answer: 210

Since the fixed member must not be included, only 10 members are available for selection. As the positions in a committee do not matter, use combinations: \(\binom{10}{4}=210\). Hence, the correct answer is 210. Option 330 is incorrect because it equals \(\binom{11}{4}\), which does not exclude the fixed member. Exam tip: When a person must be excluded, first remove that person from the total and then apply combinations.

Related tags

CombinationsClass 11Committee FormationRestricted SelectionPermutations And CombinationsMathematicsClass 11 Mcq

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