A traffic light at crossing change after every 30 seconds at a particular time both
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A traffic light at a crossing changes after every 30 seconds.At a certain time,both the lights change together.After how ...
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To find the time at which they will again change together, we have to compute the L.C.M. of 32 and 40.32 = 2*2*2*2*240 = 2*2*2*5L.C.M. of 32 ...
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