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SSC Sample Paper SSC CGL - Sample Paper-20

  • question_answer
    4 bells ring at intervals of 30 min, 1 h, \[1\frac{1}{2}h\] and 1 h 45 min respectively. All the bells ring simultaneously at 12 noon. They will again ring simultaneously at

    A) 12 mid night                  

    B) 56.25

    C) 6 am                

    D) 9 am

    Correct Answer: D

    Solution :

    LCM of 30, 60, 90, 105 = 1260 Hence, all the bells will again ring simultaneously after 1260 min, i.e., at 9 am.


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