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Using (1,2,3,4,5,6,7), how many (4)-digit numbers greater than (3000) can be formed without repetition?

Answer and explanation

Correct answer: (5 \times 6 \times 5 \times 4=600)

The thousands digit is one of (3,4,5,6,7), then (6,5,4) choices remain. Apply the inequality condition at the first place.

Related tags

CountingDigitsGreater-ThanFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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