Q. A, B, C start running at the same time and at the same point in the same direction in a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds. After what time will they meet again at the starting point?
Answer: 46 hours 12 seconds
Notes: Required Time = LCM of 252, 308 and 198 seconds = 2772 seconds = 46 minutes 12 seconds. Hence option [D] is correct answer.

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