Four whistles blow at intervals of 6, 8, 12, and 18 seconds. They start blowing simultaneously
at 12 O’clock. In how much time will they blow again simultaneously?
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Answer:
LCM of 6,8,12 and 18=36 sec
They will blow again in
12:00:36
But if 6,8,12& 18 in minutes then
answer will be 12:36
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