Question

An electronic device makes a beep after every 60 sec. Another device makes a beep after every 62 sec. They beeped together at 10
a.m. The next time, when they would beep together at the earliest is:

A 10.30 a.m
B 10.31 a.m
C 10.59 a.m
D 11.00 a.m
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