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Discussion :: Problems on H.C.F and L.C.M

  1. A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and c in 198 seconds, all starting at the same point. After what time will they again at the starting point ?

  2. A.

    26 minutes and 18 seconds


    42 minutes and 36 seconds


    45 minutes


    46 minutes and 12 seconds

    View Answer


    Answer : Option D

    Explanation :

    L.C.M. of 252, 308 and 198 = 2772.

    So, A, B and C will again meet at the starting point in 2772 sec. i.e., 46 min. 12 sec.

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