6th Class Mathematics Playing with Numbers Question Bank Playing with Numbers

  • question_answer Four bells ring at intervals of 6, 7, 8 and 9 seconds respectively. After how many seconds do all the bells ring together?

    A)  504                         

    B)         516

    C)  508                       

    D)         512

    Correct Answer: A

    Solution :

      L.C.M. \[=2\times 3\times 7\times 4\times 3=504\]

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