Library /Berkeley Math Circle

Berkeley Math Circle

23 problems here, rated 3.9 to 4.8 on our scale (AMC 10/12 to AIME). 18 of them ask for a proof.

Algebra 6Combinatorics 2Geometry 10Number theory 5

#	Topic	Diff	Type	Year
1	Geometry	3.9	answer	—	open
2	Algebra	4.0	answer	—	open
3	Algebra	4.0	answer	—	open
4	Geometry	4.2	proof	—	open
5	Combinatorics	4.3	answer	—	open
6	Algebra	4.3	proof	—	open
7	Number theory	4.3	proof	—	open
8	Geometry	4.3	proof	—	open
9	Number theory	4.3	proof	—	open
10	Combinatorics	4.4	answer	—	open
11	Geometry	4.5	proof	—	open
12	Number theory	4.5	proof	—	open
13	Geometry	4.6	proof	—	open
14	Geometry	4.6	proof	—	open
15	Geometry	4.6	proof	—	open
16	Geometry	4.6	proof	—	open
17	Algebra	4.7	proof	—	open
18	Algebra	4.7	proof	—	open
19	Algebra	4.7	proof	—	open
20	Number theory	4.7	proof	—	open
21	Geometry	4.8	proof	—	open
22	Number theory	4.8	proof	—	open
23	Geometry	4.8	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.