Aptitude - HCF - Discussion

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Q.

The traffic lights at three different road crossings change after every 48 sec, 72 sec and 108 sec respectively. If they all change simultaneously at 8 : 20 : 00 hours, then they will again change simultaneously at                         
A. 8 : 27: 12 hrs B. 8:27:36 hrs
C. 8: 27: 24 hrs D. 8:27:48 hrs

Answer: Option A
Explaination:

 


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