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21 problems in 26 minutes, twice. The GRE gives you an on-screen calculator and then punishes you for reaching for it. Every click costs you four seconds you needed for reading the question properly. This book gets you off the calculator. Start with the 6-Minute Benchmark on page one: twelve problems, no calculator, stopwatch running. Write the number down. On Day 28 you sit the same twelve again, and the difference between the two numbers is what this book was worth to you. Inside: