<p>I also have those 3 books. All three gives you EIGHT practice tests for Math. I’ve done all 480 questions so many times (at least 20 times) that on majority of the problems, I don’t even need a scratch paper anymore and I always have more than 30 minutes to spare. I’ve read their tips and the review chapters over and over that I have every rule and every sentence memorized. Yes, this is borderline obsession but I want at least a 30 on the ACT this June (my one and only shot at the exam).</p>