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      Question

      If the number '6k3942' is divisible by 3, then find the

      maximum value of 'k'.
      A 7 Correct Answer Incorrect Answer
      B 9 Correct Answer Incorrect Answer
      C 6 Correct Answer Incorrect Answer
      D 1 Correct Answer Incorrect Answer

      Solution

      ATQ,

      A number is divisible by 3 when the sum of its digits is divisible by 3.

      Sum of digits of '6k3942' = 6 + k + 3 + 9 + 4 + 2 = (k + 24)

      (k + 24) is divisible by 3 when k = 0, 3, 6 or 9

      Therefore, maximum value of 'k' = 9

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