Maths Olympiad Prep

Library /China Hong Kong Mathematical Olympiad

China Hong Kong Mathematical Olympiad

23 problems here, rated 4.5 to 5.9 on our scale (AIME to AIME, harder). 23 of them ask for a proof.

Algebra 8Combinatorics 3Geometry 9Number theory 3
#TopicDiffTypeYear
1 Geometry 4.5 proof — open
2 Geometry 4.5 proof — open
3 Geometry 4.5 proof — open
4 Geometry 4.5 proof — open
5 Algebra 4.6 proof — open
6 Combinatorics 4.6 proof — open
7 Algebra 4.6 proof — open
8 Number theory 4.8 proof — open
9 Algebra 4.9 proof — open
10 Geometry 5.0 proof — open
11 Geometry 5.1 proof — open
12 Number theory 5.2 proof — open
13 Number theory 5.2 proof — open
14 Algebra 5.3 proof — open
15 Geometry 5.4 proof — open
16 Geometry 5.4 proof — open
17 Combinatorics 5.5 proof — open
18 Algebra 5.6 proof — open
19 Algebra 5.6 proof — open
20 Geometry 5.6 proof — open
21 Algebra 5.7 proof — open
22 Combinatorics 5.7 proof — open
23 Algebra 5.9 proof — 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.