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      Question

      Four bells ring at 16, 24, 36, 42 minute

      intervals. If they ring together at 6.00 a.m., after how long would they next ring together?
      A 842 minutes Correct Answer Incorrect Answer
      B 964 minutes Correct Answer Incorrect Answer
      C 886 minutes Correct Answer Incorrect Answer
      D 1008 minutes Correct Answer Incorrect Answer

      Solution

      LCM of 16, 24, 36 and 42 minutes = 1008 min

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