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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingHard
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One book is to be selected from each of four subjects. Mathematics has (5), Physics has (4), Chemistry has (6), and Biology has (3) books. The first Mathematics book and the second Chemistry book cannot be selected together. How many selections are possible?

Answer and explanation

Correct answer: (348)

Total selections are (5\times4\times6\times3=360), and invalid selections are (1\times4\times1\times3=12). Subtract the forbidden selections from the total.

Related tags

Permutations-And-CombinationsFundamental-PrincipleCountingHardFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq
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