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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingHard
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One snack is to be selected from each of three counters. The counters have (6,7,8) items and contain (2,3,1) premium items respectively. How many ways are there to select exactly one premium item?

Answer and explanation

Correct answer: (156)

There are three cases depending on which counter gives the premium item, and the sum is (56+84+16=156). For exactly one condition, count each possible source separately.

Related tags

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