While I am still not a quant expert I loved the Kaplan
GMAT/GRE math workbook (went through it twice and am going to go through my trouble questions for a third time). It isn't huge on concepts, but if you go through all 388 questions you will have a good base to start from. Kaplan 800
picks up where the math workbook leaves off as it touches some subjects that were neglected in the workbook. From there I would focus on some of the advanced topics like combinations, high level statistic questions, number theory, high level algebra, probability........
Right now I am making my way through the official guide workbooks which are supposed to be slightly more advanced than the OG 11
. I think the OG is a huge must for verbal. Kaplan
really doesn't do a great job with the verbal section. But I believe the Kaplan
math materials are great!