How many 4-digit positive integers divisible by 3 can be formed using only the…

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How many 4-digit positive integers divisible by 3 can be formed using only the digits {1, 3,4, 6, 7}, such that no digit appears more than once in a number?

  1. A.

    24    

  2. B.

    48

  3. C.

    72

  4. D.

    12

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Correct answer: B

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