InterviewSolution
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1). 6 : 14 : 30 hours2). 6 : 40 : 00 hours3). 6 : 14 : 00 hours4). 10 : 40 : 00 hours |
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Answer» LCM of 15 sec, 18 sec, 27 sec, 30 sec = 2 × 3 × 3 × 5 × 1 × 1 × 3 × 1 = 270 sec 270 sec = 270/60 = 4 min 30 sec = 0 : 04 : 30 ∴ They will again change simultaneously at 6 : 10 : 00 + 0 : 04 : 30 = 6 : 14 : 30 hours |
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