हिंदी

The Traffic Lights at Three Different Signal Points Change After Every 45 Seconds, 75 Seconds and 90 Seconds Respectively. - Mathematics

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प्रश्न

Choose the most appropriate option:

The traffic lights at three different signal points change after every 45seconds, 75 seconds and 90 seconds respectively. If all change simultaneously at 7:20:15 hours, then they will change again simultaneously at

विकल्प

  • 7:27:50 hours

  • 7:27:45 hours

  • 7:28:00 hours

  • 7:27:30 hours

MCQ

उत्तर

7:27:45 hours

Explanation:

LCM of 45, 75 and 90 = 450 seconds.
i.e. 7 minutes 30 seconds.

∴ Required time = 7: 27: 45 hours.

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Clock and Calender (Entrance Exam)
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2015-2016 (May) Set 1

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