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INMO - Indian National Mathematical Olympiad
Advanced preparation guide for India's national math olympiad
Conducted By
HBCSE
Eligibility
RMO Qualifiers
Format
6 problems in 4 hours
Next Stage
IMOTC → IMO Team Selection
Preparation Roadmap
Follow these steps to prepare systematically
1
Week 1-4
Solidify RMO-Level Skills
Ensure you can comfortably solve RMO problems. INMO is significantly harder — strong foundations are essential.
2
Week 4-12
Advanced Problem Solving
Study from "Functional Equations" by BJ Venkatachala, "Inequalities" by Manfrino, advanced combinatorics and geometry.
3
Week 10-18
Solve International Olympiad Problems
Practice problems from ISI, CMI entrance, Balkan MO, APMO, and easier IMO problems (P1, P4).
4
Week 14-20
Master Proof Techniques
Contradiction, induction, extremal principle, invariants, coloring arguments. Every INMO problem needs a rigorous proof.
5
Week 18-22
Full Mock INMO Tests
Take 4-hour mock tests with past INMO papers. Get your proofs reviewed by mentors or seniors.
Recommended Resources
- Functional Equations (BJ Venkatachala)
- Inequalities (Manfrino)
- Past INMO & IMO Shortlist Problems
- Evan Chen's Handouts (web.evanchen.cc)
- AoPS INMO Forum
Pro Tips
- Solving 2 problems completely can qualify you
- Partial progress matters — write everything you can prove
- INMO problems often combine two topics
- Mentorship from past INMO/IMO qualifiers is invaluable
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