Five bells start tolling at intervals of 4 seconds,5 seconds,7 seconds,8 seconds and 10 seconds respectively. After how much time will all the bells toll together?
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Seriously no one knows this!?
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after 4 min 40 sec as LCM of 5 7 8 and 10 is 280 sec is 280 sec i.e. 4 minutes 40 second
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