You will not need to study that stuff to answer correctly, though I suppose it's always possible to see GMAT questions that might be answered more quickly with such knowledge (or similar).

For example, there's a GMAT Prep question that essentially asks what the sum of a sequence with terms defined as [(-1)^(k+1)] * [1/2^k] converges to. You don't have to recall any theorem about series, because listing just a few terms (say, 5 of them) would be enough to see a pattern emerge. Also, the answer choices are not discrete values, but rather broad ranges of values.

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Emily Sledge | Manhattan GMAT Instructor | St. Louis

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