mikemcgarry wrote:
If n is an integer greater than 50, then the expression \((n^2 - 2n)(n^2 - 1)\) MUST be divisible by which of the following?
I. 4
II. 6
III. 18
(A) I only
(B) II only
(C) I & II only
(D) II & III only
(E) I, II, and III
For a discussion of how to use the properties of consecutive integers to unlock problems such as this, see:
http://magoosh.com/gmat/2014/consecutiv
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