In Ya. I. Perelman’s book, original mathematical problems of varying difficulty are presented. Arithmetic exercises, puzzles, tricks, interesting events subject to the laws of mathematics, and many other fascinating phenomena will leave no reader indifferent. This problem book is intended to develop mathematical intuition, logical thinking, and to awaken interest in further solving arithmetic problems.
A PDF file is included with this audiobook and is recommended for download. The file is important for understanding and mastering the book.