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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingMedium
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A class has 7 boys and 5 girls. In how many ways can one boy be chosen as monitor and one girl as co-monitor?

Answer and explanation

Correct answer: 35 ways

There are 7 choices for the boy monitor and 5 choices for the girl co-monitor. By the multiplication principle, there are 7 × 5 = 35 ways to choose the pair.

Related tags

Counting PrincipleFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq
सुधार सुझाएँ / Earn

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