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Class 11MathematicsPermutations and CombinationsCombinationsExpert
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From the numbers (1) to (8), (3) numbers are chosen so that their sum is even. How many selections are possible?

Answer and explanation

Correct answer: (28)

The sum is even when (3) even numbers or (2) odd and (1) even number are chosen, giving (28). Count parity cases separately.

Related tags

Class11CombinationsParitySum-EvenExpertPermutations And CombinationsMathematicsClass 11 Mcq
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