Data Sufficiency (DS) | Re: M and N are integers such that 6

I will try to simplify amins309's explanation to some extent:

Statement 1: The GCD of M and N is 6. Therefore, M and N must contain 2*3 and may or may not contain any other number
M = 2 * 3 * 7 (any other number or nothing at all)
N = 2 * 3 * 5 (any other number or nothing at all) --- INSUFFICIENT

Statement 2: The LCM of M and N is 36. Therefore, M and N can take the following forms:
M = 2 * 3 * 2 = 12 N=2*3*3 = 18
M = 2 * 3 * 3 = 18 N=2*2*3*3 = 36
M = 2*3*3 = 18 N= 2*2*3*3
...

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