American Mathematics Competitionshttps://maa-amc.org/amc/amc-competitionsThe American Mathematics Competitions | CompetitionsThe AMC 8 is a 25-question, 40-minute, multiple-choice examination in middle school mathematics. AMC 10 / 12. The AMC 10 and AMC 12 are 25-question, 75-minute, multiple-choice examinations in high school mathematics. Putnam. The Putnam is a 6-hour undergraduate competition for individuals and teams in the US and Canada.