The archive
4,441 past contest problems
Pick a contest, then a year or competition. Every problem has its own page with answer checking and, where available, a full solution.
- 10
656 problems · 46 exams · 2000–2023
AMC 10
25-question, 75-minute multiple-choice contest for students in grade 10 and below.
- 12
1,213 problems · 50 exams · 2000–2025
AMC 12
25-question, 75-minute multiple-choice contest covering the full high-school curriculum.
- ∞
933 problems · 66 exams · 1983–2024
AIME
American Invitational Mathematics Examination: 15 questions, integer answers 000–999.
- Σ
730 problems · 23 collections · 2006–2025
IMO
International Mathematical Olympiad problems, shortlists and longlists.
- π
909 problems · 36 competitions
Regional Olympiads
USAMO, USAJMO, APMO, Balkan MO, China, EGMO, Baltic Way and more national and regional olympiads.