Test Your IQ: 400 Questions to Boost Your Brainpower contains IQ test questions written and compiled by IQ-test experts, complete with a guide to assessing individual performance. Working through the questions can help anyone develop powers of calculation and logical reasoning.Test Your IQ: 400 Questions to Boost Your Brainpower book include demanding word games, mathematical bell-ringers, prefix puzzlers, and algebraic twisters guaranteed to rile your brain, and make you feel like a genius when you get the right answer.