$"($Python $)$

Recursive Factorial

parameters n $$ argument $$ recursive function $$ n $($n factorial$)$ Factorial $-$

n$!=$ n x $($n$-1)$ x $($n$-2)$ x $...1$ ab$20$

$$:

$!=5$ x $4$ x $3$ x $2$ x $1=120$

$($ n $"$