Combinatorics & Counting

Chess Position Numbers

Discover Chess Position Numbers as a core part of Combinatorics & Counting. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.

Pascal's Triangle Magic

Discover Pascal's Triangle Magic as a core part of Combinatorics & Counting. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.

Fundamental Counting Rule

Discover Fundamental Counting Rule as a core part of Combinatorics & Counting. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.

Advanced Counting Techniques

Inclusion-exclusion, generating functions, and recurrence relations let you count sets that simple permutations and combinations cannot handle. They are the workhorses of higher combinatorics.

Binomial Theorem Expand

Discover Binomial Theorem Expand as a core part of Combinatorics & Counting. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.

Rubik's Cube Combinations

Discover Rubik's Cube Combinations as a core part of Combinatorics & Counting. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.