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Q:

The traffic lights at three different road crossings change after 24 seconds, 36 seconds and 54 seconds respectively. If they all change simultaneously at 10 : 15 : 00 AM, then at what time will they again change simultaneously? 

  • 1
    10:16:54 AM
  • 2
    10:18:36 AM
  • 3
    10:17:02 AM
  • 4
    10:22:12 AM
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Answer : 2. "10:18:36 AM"

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