Combinatorics. 9th edition, stereotypical. Vilenkin N.Ya., Vilenkin A.N., Vilenkin P.A.

The book in a popular form tells about combinatorics, methods for solving combinatorial problems, about recurrent relationships and producing functions. The material partially captures areas that go beyond elementary mathematics, but the presentation is available to a good student of high school. The book contains more than 400 exercises.

The book will be useful for high school students interested in mathematics, teachers, first -year students of mathematical faculties of universities and pedagogical institutes, as well as everyone in their practical work with combinatorial tasks.