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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingHard
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A portal requires selecting a region among (4) regions. (3) regions have (3) schools each and one region has only (2) schools; every school has (5) sections and every section has (2) monitors. How many monitor selections are possible?

Answer and explanation

Correct answer: (110)

School choices are (3\times3+1\times2=11), and then there are (5\times2) choices. Because regions are unequal, count total schools first.

Related tags

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