FACT function

Category: Math and trigonometry
Introduced: Excel 2003

Summary

Returns the factorial of a number

Syntax

FACT(number) The FACT function syntax has the following arguments:
• Number Required. The nonnegative number for which you want the factorial. If number is not an integer, it is truncated.

Example

=FACT(5)
=FACT(1.9)
=FACT(0)
=FACT(-1)
=FACT(1)

Microsoft Support Page

https://support.microsoft.com/en-us/office/fact-function-ca8588c2-15f2-41c0-8e8c-c11bd471a4f3

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