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Asked by fathima12 | 17th Aug, 2010, 11:21: AM

Expert Answer:

LCM of 36, 60, 72 is 360.
Hence they'll change again simultaneously after 360 sec. i.e. at 5:06 am.
Regards,
Team,
TopperLearning.

Answered by  | 17th Aug, 2010, 12:20: PM

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