Lesson: Least Common Multiple (LCM)

Comment on Least Common Multiple (LCM)

Hi Brent, I have difficulties with the skill of ¨selecting numbers with a certain least common multiple¨, could you explain it a bit further, and help me with this question please? Thank you x

If x is a positive integer, what is the least common multiple of x, 6, and 9 ?
(1) The least common multiple of x and 6 is 30.
(2) The least common multiple of x and 9 is 45.
gmat-admin's picture

Great question. Here are two different approaches:

Approach #1: https://gmatclub.com/forum/if-x-is-a-positive-integer-what-is-the-least-...

Approach #2: https://gmatclub.com/forum/if-x-is-a-positive-integer-what-is-the-least-...

Please let me know if either of those approaches help.


Thank you thank you, now I fully understand everything!! x

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