This book will help you learn combinatorics in the most effective way possible - through problem solving. It contains 263 combinatorics problems with detailed s

"102 Combinatorial Problems" consists of carefully selected problems that have been used in the training and testing of the USA International Mathematical Olymp

This unique approach to combinatorics is centered around unconventional, essay-type combinatorial examples, followed by a number of carefully selected, challeng

This book deals mainly with pattern counting problems. It is a continuation of our previous combinatorics problem book. There are 80 problems with detailed solu

Every year there is at least one combinatorics problem in each of the major international mathematical olympiads. These problems can only be solved with a very