Five bells commence tolling gogether and toll at intervels of 2,5,6,8 and 9 seconds respectively. How many times do they toll together in a hour ?
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LCM=360 seconds
=6 mins
Mins in an hour=60 mins
No. of times the bell rang in an hour=60/6
= 10
Therefore,no. of times the bell rang in an hour = 10
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