Combinatorics. A problem based approach (Q1991338)

This book is an extended version of the latest edition of another book written by the author in Serbian under the title Combinatorics. The text provides an introduction to several topics in combinatorics, such as enumerative combinatorics, graph theory, magic and Latin squares, mathematical games and elementary probability. The book is meant for secondary school students who prepare for mathematical competitions and for undergraduate students. Indeed, apart from elementary exercises, there are problems of medium difficulty and also problems taken from national mathematical competitions in different countries. At the end of the book there are the solutions to all these problems. Overall, this is a good theoretical introduction for any curious and talented student.