Central European Olympiad, A: The Mathematical Duel

This book contains the most interesting problems from the first 24 years of the ''Mathematical Duel'', an annual international mathematics competition between the students of four schools: the Gymnázium Mikuláše Koperníka in Bílovec, Czech Republic, the Akademicki Zespół Szkół Ogólnokształcących in Chorzów, Poland, the Bundesrealgymnasium Kepler in Graz, Austria and the Gymnázium Jakuba Škody in P...