Factorial Notation

High School Math based on the topics required for the Regents Exam conducted by NYSED.

What is a factorial?
For a positive integer n, n! is the product of positive integers less than or equal to n.

The following diagram describes the factorial notation and gives some examples using factorials. Scroll down the page for more examples and solutions using factorials.

How to evaluate factorials?
Factorials - Evaluating Factorials!
Basic Info on Factorials and some numerical examples are provided.

Simplify Expressions with Factorials Containing Variables
This video provides three examples of how to evaluate factorials and how to simplify expression involving factorials.

Factorial Notation
A tutorial video on working with constant and variable factorial.

Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.