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      Question

      When a number is divided by 19 remainder is 7. Find the

      remainder when four times of the same number is divided by 19.
      A 5 Correct Answer Incorrect Answer
      B 9 Correct Answer Incorrect Answer
      C 14 Correct Answer Incorrect Answer
      D 3 Correct Answer Incorrect Answer

      Solution

      Number = (19A + 7), where 'A' is constant. Therefore, required remainder = [4 × (19A + 7)] ÷ 19 = (76A + 28) ÷ 19 = (76A + 19 + 9) ÷ 19 = 9

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