factorial

Definition from Wiktionary, a free dictionary

Contents 1 English 1.1 Pronunciation 1.2 Noun 1.2.1 Usage notes 1.2.2 Related terms 1.2.3 Translations 1.2.4 See also 1.2.5 External links

[edit] English

Wikipedia

[edit] Pronunciation

• IPA: /fækˈtɔːɹiəl/, SAMPA: /f{k"tO:ri@l/

[edit] Noun

factorial (plural factorials)

1. (mathematics) The result of multiplying a given number of consecutive integers from 1 to the given number. In equations, it is symbolized by an exclamation mark (!). For example, 5! = 1 * 2 * 3 * 4 * 5 = 120.

[edit] Usage notes

"n!" is read as "factorial of n" or "n factorial."

[edit] Related terms

• fact
• faction
• factor
• factory
• fashion

[edit] Translations

[edit] See also

• factorial prime

[edit] External links

• factorial in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
• factorial in The Century Dictionary, The Century Co., New York, 1911