
Factorial - Wikipedia
Factorials have been discovered in several ancient cultures, notably in Indian mathematics in the canonical works of Jain literature, and by Jewish mystics in the Talmudic book Sefer Yetzirah.
The Factorial Function
The factorial function is a mathematical formula represented by an exclamation mark "!". In the Factorial formula, you must multiply all the integers and positives that exist between the …
Factorial Function - Math is Fun
The factorial function (symbol: !) says to multiply all whole numbers from our chosen number down to 1. We usually say (for example) 4! as "4 factorial", but some people say "4 shriek" or …
Factorial Calculator n!
Aug 1, 2025 · What is a Factorial? A factorial is a function that multiplies a number by every number below it. For example 5!= 5*4*3*2*1=120. The function is used, among other things, to …
Factorial in Maths - GeeksforGeeks
Oct 16, 2025 · The factorial of a number is the product of all positive integers from that number down to 1. It plays a key role in many mathematical concepts, such as permutations, …
Factorial Function - Symbol, Formula, Properties, & Examples
Mar 7, 2025 · What is a factorial in mathematics. Know its symbol, equation, rules, and properties. How to solve it. The factorial of 0, negative numbers, and decimals with examples.
What are factorials, and how do they work? | Purplemath
The factorial of a whole number n, denoted as n!, is the product of all the whole numbers between 1 and n: 1×2×3×…× (n−1)×n. So 3! would be 1×2×3 = 6.
Factorial - from Wolfram MathWorld
The factorial n! is defined for a positive integer n as n!=n (n-1)...2·1. (1) So, for example, 4!=4·3·2·1=24. The notation n! was introduced by Christian Kramp (Kramp 1808; Cajori 1993, …
Factorial | Definition, Symbol, & Facts | Britannica
Factorial, in mathematics, the product of all positive integers less than or equal to a given positive integer and denoted by that integer and an exclamation point.
The Factorial (!) in Mathematics and Statistics - ThoughtCo
May 14, 2025 · A factorial is multiplying a number by all whole numbers less than it down to one. Factorials are useful in math areas like combinatorics and probability calculus, where …