Discussion of Question with ID = 067 under HCF-and-LCM

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Question

What is the LCM of ${6/13}$, $3{3/5}$ and ${2/9}$?

A

18.

B

19.

C

20.

D

21.

Soln.
Ans: a

The LCM of numerators 6, 18 and 2 is 18. The HCF of denominators 13, 5 and 9 is 1. So the required LCM of the given fractions is 18/1 = 18.


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