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Excel FACT Function

Excel FACT function
Summary 

The Excel FACT function returns the factorial of a given number. For example, =FACT(3) returns 6, equivalent to 3 x 2 x 1.

Purpose 
Find the factorial of a number
Return value 
The factorial of a number
Syntax 
=FACT (number)
Arguments 
  • number - The number to get the factorial of.
Version 
Excel 2003
Usage notes 
  • The number cannot be negative or FACT will return the #NUM error.
  • If the number is not an integer it will be truncated to an integer, then solved.
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Excel FACTDOUBLE function
Excel FACTDOUBLE Function

The Excel FACTDOUBLE function returns the double factorial of a number. A double factorial is symbolized by two exclamation marks (!!).

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