The kind of problems invented by Grigory Oster will definitely not be assigned in school classes. Because otherwise, going to school would be too much fun. This book contains problems about friendship and fighting, about man-eaters and ghosts, about the beaten and the unbeaten, and other interesting things. Solving them develops not only mathematical abilities but also a sense of humor. And Uncle Kolya Vorontsov's illustrations can be looked at endlessly!
Author: Grigory Oster
Illustrations: Nikolai Vorontsov
Pages: 80 (offset). Hardcover
Dimensions: 202x264x13 mm
