Indian National Mathematical Olympiad
India's national mathematical olympiad, the final selection stage for the Indian IMO team. Proof-based format for ~300 elite students.
Grade Levels
Grades 8-12 (Ages 13-18)
Format
Proof-Based · 6 questions
Participants
~300
January
Held in January
Registration
By invitation from RMO results
Prizes & Recognition
Top ~50 invited to IMO Training Camp (IMOTC). 6 selected for IMO team.
About This Competition
The Indian National Mathematical Olympiad (INMO) is the third stage of India's olympiad pipeline (after IOQM and RMO). Approximately 300 students, selected from regional rounds across ~30 regions, compete in this proof-based competition. The top ~50 performers are invited to the IMO Training Camp (IMOTC), from which India's 6-member IMO team is selected.
How to Prepare
Master Proof-Based Problem Solving
INMO requires complete, rigorous proofs. Practice writing formal proofs with clear logical flow for problems in algebra, geometry, number theory, and combinatorics.
Quality Over Quantity in Solutions
With 6 problems in 4 hours, you won't solve them all. Focus on writing 2-3 complete, well-structured proofs rather than attempting all problems superficially.
Study 'Challenge and Thrill of Pre-College Mathematics'
This classic Indian book by Pranesachar et al. covers exactly the topics tested at INMO level. Supplement with past INMO papers and solutions from HBCSE.
INMO Qualifiers Train for IMO
INMO awardees attend the IMO Training Camp. This intensive training with India's best mathematical minds is an invaluable experience regardless of IMO selection.
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