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Question 33.....rs agrawal

Answer»

Step-by-step explanation:

L.C.M of 48, 72, 108 = 2 X 2 x 2 x 2 x 3 x 3 x 3 = 432 sec.

After 432 seconds, the lights change simultaneously.

432 SECOND = 7 minutes 12 seconds

Therefore the time = 7 a.m. + 7 minutes 12 seconds

= 7:07:12 a.m.

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