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An online form has 4 options for class, 3 options for section, and 5 options for subject. In how many ways can one complete selection of a class, a section, and a subject be made?

Answer and explanation

Correct answer: 60

By the multiplication principle, when choices are made in successive independent stages, the total number of selections is the product of the choices at each stage. Thus, the total is \\(4 \\times 3 \\times 5 = 60\\). The value 45 results from multiplying only 3 and 5, so it omits the class choice. In exams, multiply the numbers of choices for all successive selections.

Related tags

Permutations And CombinationsCounting PrincipleMultiplication RuleSelection MethodsPermutationsMathematicsClass 11 Mcq

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