: Permutations, combinations, set theory , and graph theory. 2. Adopt a Rigorous Solving Process
: Specifically highlights problems from countries that traditionally perform well at the IMO, offering a diverse range of difficulty and style. Preparation Guide: How to Use the Material Mathematical Olympiads 2000-2001: Problems and ...
If the problems in the 2000–2001 collection feel too advanced, bridge the gap with these highly recommended texts : : Permutations, combinations, set theory , and graph theory
: Polynomials, inequalities (like AM-GM), sequences, and functional equations. inequalities (like AM-GM)