INMO (Mathematical Olympiad)Combinatorics
Combinatorics for INMO (Mathematical Olympiad)
Counting, pigeonhole, invariants, induction, extremal arguments and graphs.
📊 One of four olympiad areas
How toppers play this section
Name the technique before writing, and check every base case.
Chapters
Built to the INMO (Mathematical Olympiad) blueprint — notes, shortcuts, solved PYQ-style examples and practice in every chapter.
Topic-wise weightage in INMO (Mathematical Olympiad)
Expected question counts from previous-year paper analyses. Topics with an arrow already have a full chapter.
| Topic | IOQM Q | INMO Q | Priority |
|---|---|---|---|
| Combinatorics, Pigeonhole, Invariants and Induction | ~25% | Very high |
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