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I was wondering if anyone has any suggestions as to good reference materials to go thru as a refresher course. I've read alot of posts to go dig up high school algebra books and grammar books. But I think I threw those away ages ago. Can anyone recommend specific books that I can buy that will cover the scope of the GMAT for math and verbal?
Should I do a refresher first on all the math and verbal topics or should I dive into the OG immediately?