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Using the digits 1, 2, 3, 4, 5, 6, and 7 without repetition, how many three-digit even numbers can be formed?

Answer and explanation

Correct answer: 90 numbers

The units digit must be 2, 4, or 6, giving 3 choices. After choosing it, there are 6 choices for the hundreds digit and 5 for the tens digit. Thus, the total is 3 × 6 × 5 = 90.

Related tags

Counting PrinciplePermutationsClass 11Fundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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