question about function?

Question

How to solve this?
def fun (x):
if x == 1:
return 1
else:
return x * fun (x-1)
print (fun(5))

Answer 1

Asma Al-Samman when x==5, fun=5*fun(4)=5*4*fun(3)=5*4*3*fun(2)=5*4*3*2*1=120

Answer 2

Calling such a case a recursive function, I recommend you read about it and then I'm sure you can answer the question yourself