1, 2, 3, 4, 5... Have you learned to count yet? Very good. And do you know how to solve complex problems? Or maybe you have already graduated from high school and are working on a dissertation? Even if you think that you have mastered almost all the wisdom of the world of numbers, you will find a lot of interesting things and are not yet fully explainable in this book. And also - a lot of useful things. For example, how to learn how to quickly count, if you do not have a computer and a pocket calculator at hand, how to train memory, logical thinking. Do you know how you can use numbers to predict fate, change character, choose a friend (or friend) of life? In a word, we advise you not to waste time. Start reading the book in front of you.