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Using digits (0,1,2,3,4,5,6,7,8,9), how many (6)-digit numbers can be formed without repetition, divisible by (25), and containing the digit (7)?

Answer and explanation

Correct answer: (3060)

The valid last-two-digit endings are (25,50,75), and the presence of (7) is checked in each case. For divisibility by (25), fix the last two digits first.

Related tags

DigitsDivisibilityCaseworkFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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