Book Recommendation : Olympiad Combinatorics Book
Answer : Here is a list of books for perfect olympiad combinatorics preparation. For general study: (1) A Path to Combinatorics for Undergraduates (2) Principles and Techniques in Combinatorics (3) Problem-Solving Methods in Combinatorics: An Approach to Olympiad Problems For practising problem-solving: (1) 102 Combinatorial Problems (2) Combinatorics: A Problem-Based Approach (3) The IMO Compendium: A Collection of Problems Suggested for The International Mathematical Olympiads: 1959-2009 Second Edition For Olympiad Graph theory: Olympiad uses of graph theory is a bit different from formal graph theory taught in university courses. The best book for this is (1) Graph Theory: In Mathematical Olympiad And Competitions (2) IMO Training 2008: Graph Theory For probabilistic methods in olympiad combinatorics: (1) Expected uses of probability (2) Unexpected uses of probability For generating functions and recurrence relations: Generatingfunctionology For combinatorial in...