Definition:Factorial/Also known as

Factorial: Also known as

While the canonical vocalisation of $n!$ is $n$ factorial, it can often be found referred to as $n$ bang or (usually by schoolchildren) $n$ shriek.

Some mathematicians prefer $n$ gosh.

Some early sources favour factorial $n$.

Sources

• 1932: Clement V. Durell: Advanced Algebra: Volume $\text { I }$ ... (previous) ... (next): Chapter $\text I$ Permutations and Combinations: Factorials
• 1968: Murray R. Spiegel: Mathematical Handbook of Formulas and Tables ... (previous) ... (next): $\S 3$: The Binomial Formula and Binomial Coefficients: Factorial $n$
• 1981: Murray R. Spiegel: Theory and Problems of Complex Variables (SI ed.) ... (previous) ... (next): $1$: Complex Numbers: Solved Problems: De Moivre's Theorem: $21$
• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): Glossary
• 1992: Larry C. Andrews: Special Functions of Mathematics for Engineers (2nd ed.) ... (previous) ... (next): $\S 1.2.4$: Factorials and binomial coefficients
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): Glossary
• 2009: Murray R. Spiegel, Seymour Lipschutz and John Liu: Mathematical Handbook of Formulas and Tables (3rd ed.) ... (previous) ... (next): $\S 3$: The Binomial Formula and Binomial Coefficients: Factorial $n$