Set Theory Sanctum

Levels 63–99 · setTheory

A mystical hall of overlapping circles. Master unions, intersections, and complements to navigate the Venn diagrams.

Study Before You Play

Brush up on these topics to sharpen your skills for this zone.

Set Theory Basics

Learn what sets are and how to describe, compare, and combine them using union, intersection, and complement.

Counting Principle

Use the fundamental counting principle and inclusion-exclusion to count elements without listing them all.

Pascal's Triangle

Discover the patterns in Pascal's Triangle and their connection to combinations and set sizes.