This tutorial explains the concept of factorial notation and how to calculate factorials. The tutorial shows how to calculate a factorial on the TI 83+ graphing calculator and explains how n! = n(n - 1)! with both numerical and algebraic examples.

This tutorial discusses using permutations and factorials to solve counting problems.

This tutorial shows how to solve some counting problems with permutation when some of the objects are the same.

This tutorial shows how to calculate the number of permutations when there are restrictions on the arrangements.

This tutorial shows how to determine the number of permutations when some of the objects are identical.

This tutorial explains the concept of a combination in mathematics and shows how to determine the number of combinations in some examples.

This tutorial demonstrates how combinations differ from permutations and solves some counting problems using combinations.

This tutorial solves some counting problems using combinations.

This tutorial demonstrates several patterns in Pascal's Triangle and some properties of combinations. A few examples of using the Binomial Theorem are also shown.