Discussion of Question with ID = 088 under HCF-and-LCM

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Three cyclists are cycling in a circular track. They, respectively, take 2, 9 and 18 minutes to complete the circle once. After how many minutes will they all again meet at a single point?


18 minutes.


36 minutes.


9 minutes.


19 minutes.

Ans: a

The answer lies in finding the LCM of their times. The LCM of 2, 9 and 18 = 18.

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