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Three traffic signals at a junction in Hyderabad change after every 48, 72 and 108 seconds. If they all change together at 8:00:00 a.m., at what time will they next change together? Give the answer in seconds after 8:00:00 a.m.

Class 10Fundamental Theorem of ArithmeticNumber Systems
  • A387
  • B432
  • C477
  • D864

Step-by-Step Solution

Next together at LCM(48, 72, 108). . LCM = seconds.
Answer: B) 432

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