Dunno in the country of graphs. About 130 tasks with detailed solutions. 9th edition, stereotypical. Melnikov O.I.

In this book, an entertaining form sets out the foundations of one of the intensively developing sections of mathematics - the theory of graphs. The book is written in the form of dialogues of famous fairy -tale heroes - Dunno and his friends. The chapters are united by a single plot, elements of the theory of graphs are organically introduced into entertaining game situations. The book contains about 130 tasks with detailed solutions.

The publication is designed for secondary school students; can be used by mathematics teachers for extracurricular work.