The National Board for Higher Mathematics (NBHM) was set up by the Government of India under the Department of Atomic Energy (DAE), in the year 1983, to foster the development of higher mathematics in the country . NBHM has taken on the responsibility for selecting and training the Indian team for participation in the International Mathematical Olympiad every year . 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 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.