Five bells ring at an interval of 5, 6 ,8 ,9 ,12 sec. All belts start ringing together,how many time bell ring together in next 1 hour
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LCM of 5,6,8,9,12=360
all bells ring together interval of 360sec.
1hour =60×60=3600sec
no. of intervals =3600/360=10
In next 1 hour all bells ring together for 10 times
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