Three bells ring at intervals of 5 sec, 6 Sec , 7 sec. If they toll together for the first timr at 9 Am in the morning, after what interval of time will they together ring again for the first time..
This question requires LCM ..How do we know it?
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it is simple whenever a question is regarding the least common multiple of quantities given it requires LCM
pbora1011:
How? Why is it LCM not HCF? Where is it shown that it is Least common multiple
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