Popular television presenter Johnny Ball shares his love of maths and the essential part numbers play in our lives, from measuring, counting, and predicting to solving all sorts of problems. But maths isn't just about counting and calculations. Explore a fantastic world that is full of surprises. Learn how to crack codes and unravel mazes, and discover why finding a prime number can make you a millionaire. Impress your friends with magic tricks and mind-reading techniques, and find out about the simple puzzles that have stumped the world's brainiest mathematicians for centuries.