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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingHard
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A student must attempt (5) questions out of (8). At least (2) of the first (3) questions must be attempted. In how many ways can the selection be made?

Answer and explanation

Correct answer: (31)

Choose (2) or (3) from the first (3), then choose the remaining questions from the other (5). For an at least condition, split into cases.

Related tags

CombinationsCountingExam-PatternFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq
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