Six different bells in a tower toll at the intervals of 9 sec, 12 sec, 15 sec, 18 sec, 21 sec and 24 sec respectively.
If all of them toll at 6 am, the next time they toll together is:
(1) 7.42 am (2) 6.42 am (3) 8.00 am (4) 9.00 am
(2) 6.42 am is the right answer . but I want to know how to find this . I need step by step explanations.
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265 are the answers for ureu
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