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The number 481481 is exactly divisible by which of the following?

  • A.7 only
  • B.11 only
  • C.13 only
  • D.7, 11 and 13

Answer: D

Any number of the form 'abcabc' is a multiple of 1001.

\(481481 = 481 \times 1001\).

The prime factorization of 1001 is \(7 \times 11 \times 13\).

Therefore, any number of the form 'abcabc' will be divisible by 7, 11, and 13.

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