6.Four bells toll after an interval of 8, 9, 12 and and 15 seconds res – InterviewSolution

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1.	6.Four bells toll after an interval of 8, 9, 12 and and 15 seconds respectively. When will they tollagain?
Answer» we have to find at which time all will ring together so we have to find L.C.M. of all 4 numbers8=2×2×29=3×312=3×2×215=3×5so L.C.M.=2×2×2×3×3×5=360so after 360 seconds they all toll.

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