Do you know arithmetic? Perelman Ya. I.

In the book of Jacob Perelman “Do you know arithmetic”, written a little less than a century ago, you will find a curious and fascinating story of the oldest section of mathematics - arithmetic. Numers-giants and numbers-carlines, various number systems, arithmetic paradoxes and puzzles: many wonderful tasks, tricks, puzzles, reboses are collected in this book.

Spend time with benefit and pleasure, developing logical thinking!