CMO
10 problems here, rated 5.3 to 7.5 on our scale (AIME, harder to National olympiad, round 2). 10 of them ask for a proof. Years covered: 2017–2024.
| # | Topic | Diff | Type | Year | |
|---|---|---|---|---|---|
| 1 | Algebra | 5.3 | proof | 2017 | open |
| 2 | Number theory | 5.6 | proof | 2017 | open |
| 3 | Geometry | 5.6 | proof | 2017 | open |
| 4 | Geometry | 6.6 | proof | 2017 | open |
| 5 | Combinatorics | 6.8 | proof | 2017 | open |
| 6 | Geometry | 6.8 | proof | 2024 | open |
| 7 | Number theory | 7.2 | proof | 2024 | open |
| 8 | Number theory | 7.3 | proof | 2024 | open |
| 9 | Algebra | 7.3 | proof | 2024 | open |
| 10 | Algebra | 7.5 | proof | 2024 | open |
These are sorted by difficulty within the competition, but they aren't a course.
The track is the route through, drawn from all the sources at once.