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x!

On a Casio calculator you can calculate the factorial of a natural number

PROB x!
OPTN F6 F3 F1

or via the CATALOG as

 ! 

 


Example 1

To calculate 4! = 24 in RUN·MAT mode

PROB x!
 4  OPTN F6 F3 F1 4! EXE 4!
  24

 


Example 2

To enter 0! via the CATALOG

!
 0  EXE 0!
1

This is correct, because by definition is specified that 0! ≝ 1.

 


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