can someone explain to me why the result is 120?

Question

from functools import reduce
mul = lambda n1, n2: n1 * n2
class cls:
def __enter__(self):
def f(n):
return reduce(mul, range(2, n + 1), 1)
return f
def __exit__(self, *args):
pass
with cls() as a:
print(a(5))

120

Answer 1

Subsequent numbers are multiplied: 2*3*4*5

Answer 2

Hi Game0ver
range(2, n+1) --> range(2, 6) which is 2, 3, 4, 5 and here we will multiply them in 1 step which means without skip any of this number. So the result 2*3*4*5 = 120

Answer 3

Thank you so much 🙏

Answer 4

I reckon the answer is 5!

{edit: who downvoted 5 factorial as being the answer???? 5 factorial is written as 5! }