Product of positive integers ≤ n. n! = n x (n - 1) x (n - 2) x ... x 2 x 1
Factorial Expansions are as follows:
1! = 1 1! = 1
Simplify factorial expansions:
1! = 1
Excel or Google Sheets formula:
What is the Answer?
How does the Factorials Calculator work?
Free Factorials Calculator - Calculates the following factorial items:
* A factorial of one number such as n! * A factorial of a numerator divided by a factorial of a denominator such as n!m!/a!b!
* Double Factorials such as n!!
* Stirlings Approximation for n! This calculator has 1 input.
What 1 formula is used for the Factorials Calculator?