Pascal's Triangle Plaza

Levels 44–99 · pascalsTriangle

A plaza paved with Pascal's Triangle. Compute binomial coefficients C(n,r) and row sums to traverse its rows.

Study Before You Play

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

Pascal's Triangle

Each entry of Pascal's Triangle is a binomial coefficient C(n, r).

Counting Principle

C(n, r) counts the ways to choose r items from n — a core combinatorics concept.

The Binomial Theorem

Pascal's Triangle directly gives the coefficients of (a+b)^n expansions.