Basic Counting

This handout covers all of the material you need to know to solve most AMC and AIME problems that use basic counting techniques. It covers concepts like complementary counting, casework, and more.

These proofs and descriptions are also followed up by worked example problems as well as exercises left to the reader.

This handout is intended to be a precursor to Primeri’s Combinatorial Identities handout, written by Neil Shah and posted on our site.

Last Updated: December 18, 2021

Counting