We live in a world defined by mathematics. From everyday activities such as trade and travel, to the formulas that underpin the universe, everything around us is defined by numbers. But not all numbers were created equal: some are more important than others. Math in 100 Numbers makes light work of the most interesting ones—the numbers that define the odds, sort into sequences, and rationalize ratios. Written in a way that is uniquely easy to grasp and presented in numerical order, this book provides a potted history of mathematics and uncovers a wealth of fascinating facts, from the fun (solving a Rubik’s cube) and the familiar (degrees in a circle), to the bizarre (the lowest “vampire” number), and the mind-bending (the googol). Whether you read from zero to infinity or dip in and out at random, you will soon discover how amazing math is.