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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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