“Entertaining mathematics” is not just a book, but a real treasure trove for anyone who wants to look at mathematics from a new perspective. The author, Yakov Isidorovich Perelman, a well-known Russian mathematician and popularizer of science, created this work to show that mathematics can be fascinating and accessible. The book contains many puzzles, problems and interesting facts that will not only entertain, but also make you think about the depth of mathematical concepts. From the first pages, the reader plunges into a world where numbers and formulas become the heroes of fascinating stories. Perelman masterfully combines scientific facts with elements of the game, which makes the learning process not only useful, but also exciting. The book is full of vivid examples that help to understand complex concepts, turning them into simple and understandable ideas. This is a great way for schoolchildren, students and even adults who want to refresh their knowledge, get acquainted with mathematics in its most interesting and entertaining manifestation. "Entertaining mathematics" is suitable for a wide audience . If you are a parent who wants to interest your child in science, or a teacher who wants to make lessons more interactive, this book will be your best assistant. It will also attract the attention of puzzle and logical task lovers, as well as those who just want to spend time wisely. Readers interested in topics such as logic, combinatorics, and probability theory will find many fascinating tasks in this book that will help develop analytical thinking. The topics raised in "Entertaining Mathematics" are diverse and multifaceted. Perelman covers aspects such as arithmetic, geometry, algebra, and even elements of number theory. He not only offers problems, but also shares interesting historical facts about the great mathematicians, their discoveries and methods. The reader will be able not only to solve problems, but also to learn how mathematics affects our lives, how it is used in various sciences and how it shapes our thinking. Perelman’s style is unique: it is simple and accessible, but filled with depth and wisdom. Its ability to explain complex things in simple language makes "Entertaining Mathematics" an ideal choice for those who want not only to learn, but also to enjoy the process. Perelman is also known for his other works, such as "Entertaining Physics" and "Entertaining Astronomy", which are also noteworthy and can be a great addition to your library. This book is not just a collection of tasks, but a whole world in which you want to plunge again and again. It inspires the study of mathematics, opens new horizons and shows that even the most complex ideas can be interesting and exciting. If you are looking for a way to develop your mathematical skills or just want to spend time usefully, “Entertaining Mathematics” will become your reliable companion in this fascinating journey. Thus, if you want to discover mathematics from an unexpected side, immerse yourself in the world of puzzles and tasks that will make you think and wonder, do not miss the opportunity to read “Entertaining Mathematics” by Yakov Isidorovich Perelman . This book will not only be a source of knowledge, but also a real entertainment for the mind!