First, if you're looking for a refresher on the basic math topics tested on the GMAT, I suggest you take a look at Manhattan GMAT
's Foundations of GMAT Math
book: http://www.manhattangmat.com/storeitems ... 4&catid=10
Regarding the Official Guides, you're definitely going to want The Official Guide for GMAT Review 12th Edition--it contains hundreds of real past GMAT problems and is an invaluable resource. You may want to save the other two OGs for extra practice if you need it. Be aware that you may have difficulty going through the OG without guidance or explanations. Manhattan GMAT
's Strategy Guides take you through each type of problem tested on the GMAT, helping you to master the concepts first before directing you to OG problems for practice. Manhattan GMAT
also offers several other resources that will help you through the OGs, including our OG Companion, which contains thorough explanations to every quant problem in the Official Guide, and the OG Archer, an online tool that lets you track your progress through the OG, pinpointing your strengths and weaknesses. We've spent years continually improving our curriculum and it's very well received--I'd encourage you to check out reviews.
You mentioned that you might just be interested in studying quant. I encourage you to take our free practice GMAT exam to gauge your ability level in both quant and verbal: http://www.manhattangmat.com/free-gmat.cfm
. If you're still just interested in studying quant, Manhattan GMAT
's Complete Quant Set may be useful to you along side the Official Guide 12th
Edition: http://www.manhattangmat.com/storeitems ... 41&catid=1
Additionally, this article may help you with creating a study plan for the next two months: http://www.manhattangmat.com/blog/index ... tudy-plan/
Best of luck!
Student Services AssociateManhattan GMAT
Matt Mapplebeck | Manhattan GMAT Online Marketing Associate | New York
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