When asked to calculate the following 7! your solution will look something like: 7! = 7 x 6 x 5 x 4 x 3 x 2 x 1 = 5040. Your calculator will likely have a key that will perform this operation for you.

Try some on your own and then check with the factorial calculator below:

1. 9!

2. 1!

3. 8!
-- 6!

4. 19!
-- 13!

5. Simplify: (n + 2) (n + 1)!

Try the Online Factorial Calculator - be sure to enable active content in your browser which is often blocked.

Solutions:

1. 362 880

2. 1

3. 56

4. 19 535 040

5. = (n + 2) [(n + 1)n(n - 1)(n - 2) ...3 x 2 x 1]
=== (n + 2)!

Related Resources:

Math Symbols
A listing of math symbols and their meanings.

 

     <Glossary of Math Terms >