📖 The Pursuit of Joy Volume 1..

Test your problem solving skills by tackling over 200 hundred solved and unsolved problems in Number Theory and Inequalities. This book is an essential companion for anyone seriously trying to qualify at the various mathematical olympiads held throughout the world. The book begins with a brief theory before each new section and then quickly goes on to some serious problems from very elementary ones to some hard core problems that may even baffle the pros.