Kick start your brain with Do the math! math challenges that exercise those gray cells. Whether it's a computation problem, problems involving advanced equations, or challenges that use plain old logic, this book makes you use math. Problems are provocative and engage your curiosity. The challenges cover a range of math problems, which tantalize, challenge, and amuse. Sometimes math skills help you solve them, other times you may rely on logic. Do the math! is designed so that if you get stuck you can turn to its hint section. Each challenge also comes with an in-depth solution, found in the solution section. Problem solving fuels imagination and creativity. These 99 challenges stimulate your brain, challenge your wits, and increase your confidence. With each solution you experience a sense of accomplishment. And the challenges that you don't solve provide new insights on how to approach various new problems. By the end of Do the math! your mathematical toolkit is enhanced.