- Mathematics. the product of a given positive integer multiplied by all lesser positive integers: The quantity four factorial (4!) = 4 ⋅ 3 ⋅ 2 ⋅ 1 = 24. Symbol: n!, where n is the given integer.
Origin of factorial
Examples from the Web for factorial
Historical Examples of factorial
The possible connections within it were factorial one hundred thousand.Unwise Child
Gordon Randall Garrett
It is by no means unlikely that various dark forms of lubricipeda correspond with a progressive series of factorial additions.Problems of Genetics
These phenomena demonstrate the existence of a complex interrelation between the factorial units.The Organism as a Whole
In its place stands the factorial hypothesis, evolved by workers in America, England, and France at about the same time.Applied Eugenics
Paul Popenoe and Roswell Hill Johnson
- the product of all the positive integers from one up to and including a given integer. Factorial zero is assigned the value of one: factorial four is 1 × 2 × 3 × 4 . Symbol: n !, where n is the given integer
- of or involving factorials or factors
- The product of all of the positive integers from 1 to a given positive integer. It is written as the given integer followed by an exclamation point. For example, the factorial of 4 (written 4!) is 1 X 2 X 3 X 4, or 24.