The kind of problems created by Grigory Oster certainly won't be given in school lessons. Because otherwise, school would be too much fun. This book contains problems about friendship and fighting, cannibals and ghosts, beaten and unbeaten, and other interesting things. In the process of solving them, not only mathematical abilities, but also a sense of humor are developed. And Uncle Kolya Vorontsov's illustrations can be viewed endlessly!
Series Best Books by G. Oster Publisher AST Pages 80 Binding Hardcover Age 4 years – 8 years Format (width)x(height) Encyclopedic (200–220)×(260–280) Publication size 197x255 mm Paper Offset ISBN 978-5-17-178083-8 Net weight 480 g
