IMC mathematics international competition. According to the inquiry of Little Peanut. com, you can try to participate in IMC Mathematics International Competition after reading Gauss textbook in Grade Three. IMC Alliance was established in 2005 and officially registered in Nevada, USA. The purpose of IMC Alliance is to follow the principle that science has no borders, unite institutions, teams and individuals who are committed to popularizing mathematics education for young people around the world, build a platform for international exchange and cooperation in mathematics learning for young people, stimulate their interest in mathematics learning, and enhance friendship and cooperation.