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28 November, 12:31

A red string of holidays lights blink once every 3 seconds while a string of lights blink every 4 seconds how many times will both sets of lights blink at the same time in 1 min

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  1. 28 November, 16:03
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    5 times. The lowest common multiple of 3 and 4 is 12, which means both lights will blink at the same time every 12 seconds. Since 60seconds divided by 12secs is 5, both lights like blink together a total of 5 times in a minute.
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