fx-82MS fx-82TL fx-9860GII TI-83
Factorial
On a Casio calculator you can calculate the factorial of a natural number
SHIFT x! x-1
Example 1
To calculate 4! = 24
SHIFT x! 4!
24.4 x-1 =
Example 2
To enter 0!
SHIFT x! 0!
1.0 x-1 =
This is correct, because by definition is specified that 0! ≝ 1.