Indian National Mathematics Olympiad

The Indian National Mathematical Olympiad (INMO) is a high school mathematics competition held annually in India since 1989. It is the second tier in the Indian team selection procedure for the International Mathematical Olympiad and is conducted by the Homi Bhabha Centre for Science Education (HBCSE) under the aegis of the National Board of Higher Mathematics (NBHM).

The INMO is conducted by the MO Cell which is held on the third Sunday of January at 30 centers across the country. Prospective candidates first need to write the Regional Mathematical Olympiad(known as RMO) of their respective state or region, usually held on the first Sunday of December of the previous year. Around thirty students are selected from each region, to write the INMO. The best-performing students from the RMO (approximately 900) qualify for the second stage INMO.

Students in the twelfth grade in India are not permitted to take RMO and INMO, unless they were in the IMOTC the previous year.

The INMO examination paper comprises six problems to be solved over a time of four hours. These problems are in the areas of algebra, geometry, number theory and combinatorics. No calculus is required, though calculus based approaches are allowed to solve problems.

The qualifying students are invited to the International Mathematical Olympiad Training Camp (IMOTC), a one-month mathematics camp hosted by the Homi Bhabha Centre for Science Education in Mumbai. For first time participants, it usually extends from late April till the end of May, while it begins about 10-14 days later for senior participants. In this camp, the students are taught Olympiad mathematics and some other general mathematics. Four selection tests and two practice tests are held during this period and the top six students in the selection tests qualify to represent India in the International Mathematical Olympiad.

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