The International Mathematical Olympiad (IMO) is an annual Mathematical Olympiad for pre-collegiate students and is the oldest of the international science Olympiads. The first IMO was held in Romania in 1959. It has since been held annually, except in 1980. About 90 countries send teams of up to six students, plus one team leader, one deputy leader, and observers. The International Mathematical Olympiad (IMO) is the World Championship Mathematics Competition for High School students and is held annually in a different country.  In Pakistan National Mathematics Talent Contest (NMTC) is the third contest of National     Science Talent Contest (NSTC) which is functioning under the umbrella of Science,   Engineering, Technology and Mathematics (STEM) Careers Project, HEC. School of Mathematical Science (SMS) GCU, Lahore