Numbers and algebra
Factorial
The product of every positive integer from 1 through a non-negative integer n, with 0! defined as 1.
Common notationn!
In one sentence
What does Factorial mean?
The product of every positive integer from 1 through a non-negative integer n, with 0! defined as 1.
How it is written
n!
A compact example
5! = 5 × 4 × 3 × 2 × 1 = 120.
Where this fits
When should you learn Factorial?
The first encounter is not the final level. Many ideas begin visually, become computational in high school and become formal in college.
- 1Pre-high schoolUsually introduced
- 2High schoolGreater depth
- 3CollegeGreater depth
- 4AdvancedGreater depth
- Arithmetic
- Algebra
- Basic arithmetic
- Equations
- Functions
- Precalculus
Algebra is part of the calculation language used throughout the path.
Open the Zero-to-QM pathClear answers
Questions about Factorial
What does Factorial mean in mathematics?
The product of every positive integer from 1 through a non-negative integer n, with 0! defined as 1.
How is Factorial written?
A common notation is n!.
What is an example of Factorial?
5! = 5 × 4 × 3 × 2 × 1 = 120.