Military Families

The official provider of online tutoring and homework help to the Department of Defense.

Check Eligibility

Higher Education

Improve persistence and course completion with 24/7 student support online.

How it Works

Public Libraries

Engage your community with learning and career services for patrons of all ages.

Learn More

Corporate Partners

Support your workforce and their families with a unique employee benefit.

Get Started

Subtopics

Combinations and Permutations

Sort by:

This video includes sample exercises and step-by-step explanations of combinatorics and binomial expansions for the California Standards Test.

Khan Academy

This video includes sample exercises and step-by-step explanations of functions, combinations, and probability for the California Standards Test.

Khan Academy

AAA Math

How to compute a permutation

AAA Math

It also gives formulas, description, etc for statistics.

Wolfram Mathworld

It gives definitions and examples to statistic terminology and problems.

AAA Math

Next >