Library /Second Round

Second Round

10 problems here, rated 4.5 to 7.6 on our scale (AIME to National olympiad, round 2). 7 of them ask for a proof.

Algebra 3Combinatorics 2Geometry 1Number theory 4

#	Topic	Diff	Type	Year
1	Combinatorics	4.5	answer	—	open
2	Algebra	4.6	answer	—	open
3	Number theory	4.7	answer	—	open
4	Algebra	5.0	proof	—	open
5	Number theory	5.3	proof	—	open
6	Geometry	5.8	proof	—	open
7	Combinatorics	6.6	proof	—	open
8	Number theory	6.7	proof	—	open
9	Number theory	7.0	proof	—	open
10	Algebra	7.6	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.