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Multiple Choice Questions

Four bells toll at intervals of 14 21 and 42 minutes respectively If they toll together at 11 22 am ...........

Numerical Ability LCM, HCF

Four bells toll at intervals of 14, 21 and 42 minutes respectively. If they toll together at 11:22 am, when will they toll together for the first time after that?

11:56 am

12:04 pm

12:06 pm

11:48 am

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Explanation:

LCM of 14, 21 and 42 is 42.
It means that after every 42 minutes all bells will toll together.
Then after 11:22 am they will toll at 11:22 + 42min = 11:64 = 12:04 pm

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