AMC 10/12
AMC 10 & AMC 12
High school contest math at the AMC level: Vieta's formulas, stars and bars, modular arithmetic, power of a point, and much more.
Unit 1
Algebra
Equations, functions and sequences.
Unit 2
Counting and Probability
Counting with restrictions.
Unit 3
Number Theory
Modular arithmetic and Diophantine equations.
Unit 4
Geometry
Triangles, circles and 3D.