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Using digits (0,1,2,3,4,5,6,7), how many (3)-digit numbers can be formed without repetition such that the hundreds digit is greater than the units digit?

Answer and explanation

Correct answer: (168)

For two distinct hundreds and units digits, the larger must be in the hundreds place and it cannot be (0). Then the tens place has (6) remaining choices.

Related tags

DigitsRelative-SizeCountingFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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