three bells toll at intervals of 12 18 and 21 minutes respectively if they start tolling together after what time will they next toll together
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Answer:
They will toll again at the 252nd second.
Step-by-step explanation:
To find when these 3 bells will toll again, calculate their LCM.
The LCM of 12, 18 and 21 is 252.
Hence, they will toll again at the 252nd second.
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