GMAT Problem Solving (PS) | Re: If n is the least common multiple of 18 and 60, which of the following

==> You get 18=2(3^2) 60=(2^2)(3)(5), and since the least common multiple is the maximum value of the index, and you get n=(22)(32)(5).

Therefore, you get
I. 24=(2^3)(3) (X)
II. 36=(2^2)(3^2) (O)
III. 45=(3^2)(5) (O)

The answer is Ⅱ&Ⅲ, which is E.
Answer: E

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