<p>In his post “Tips from a 2400er”, Masochist suggested concentrating on, or “specializing” in, weaker subjects during test preparation, especially for the math section. This approach is helpful for knowledge-based questions, but I find it difficult, or perhaps superficial, to study concepts without also practicing with SAT-style questions.</p>
<p>I’m looking for Math problems involving permutations, combinations, probability, percentages, sets, unions, and intersections; Writing problems involving idioms and parallelism; and CR sentence completions.</p>
<p>It’s easy enough to find a few examples of these kinds of problems, but I’m looking for large, specialized lists. Does anyone of know of any specific problem sets or any good sources (i.e. sources with at least 20 area-specific problems)?</p>