If the number 413283P759387 is divisible by 13, then what is the value of P?

  1. A. 3
  2. B. 6
  3. C. 7
  4. D. 8

Correct Answer: D. 8

Explanation

Group the digits in blocks of three from right to left and find the alternating sum: 387 - 759 + (830+P) - 132 + 4 = 330 + P. For 330 + P to be divisible by 13, P must be 8 (since 338 = 13 \times 26).

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