INMO PYQ
The past Question papers, Solutions, Answer keys to Pre-RMO, IOQM, RMO, INMO are available at the webpages of ISI Kolkata, HBCSE, HBCSE, HBCSE. The corresponding contest collection at AoPS might be worth visiting as a discussion forum. Links to the above-mentioned Question papers, Solutions, Answer keys from these webpages have been put in what follows.
Lecture notes for Math Olympiad (IOQM, RMO, INMO)
Topics Links Algebra Combinatorics Geometry Number Theory INMO Training Camp IMO Training Camp MOPSS Simon Marais Mathematics Competition Resources