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In a class there are (8) boys and (6) girls. One boy monitor one girl co-monitor and one house from (3) houses are to be chosen. How many ways are possible?

Answer and explanation

Correct answer: (144) ways

The governing concept is the fundamental principle of counting. The three selections are made from separate categories: the boy monitor can be chosen in 8 ways, the girl co-monitor in 6 ways, and the house in 3 ways. These choices are independent, and the order of making the selections does not change the resulting assignment. Hence the total number of ways is 8 × 6 × 3 = 48 × 3 = 144. Therefore, option A is correct. The other choices arise from omitting one factor, adding instead of multiplying, or using an incorrect product. No permutation formula is needed because each role already specifies the category from which its choice is made.

Related tags

Fundamental Principle Of CountingSelection Of RolesClass11Fundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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