Question
 In two alarm clocks, alarms sound at regular intervals
of 90 seconds and 44 seconds. If they ring for the first time at 6:00 PM, when will they next ring together?Solution
According to the question, LCM of 90 seconds and 44 seconds is 1980 to 1980 /60 = 33 minutes, hence both the clocks will strike simultaneously at 6:33 p.m. But
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