I have been doing practice problems (both problem solving and data sufficiency) from books by Princeton Review and Kaplan for about a month and a half, but unfortunately I have really been struggling to reach the correct answers. I usually can't answer any of the medium or difficult problems.
Right now, I'm deciding between buying the OG Quantitative Review for additional practice problems or redoing the problems that I got wrong in the other books. Has anybody used the OG Quantitative Review? Do you think it would be worth the money and maybe improve my quantitative score?
I really just want to start getting more of the medium and difficult problems correct because right now I usually can only tackle the easier problems! Any responses/advice will be appreciated! thanks!
