How many 5's?

Question

How many 5's are printed?
x=0
for i in range(1,4)
x += i
print("5" *x)
Output: 10

So, ten fives are printed. I thought we did not count the last number in the range? So shouldn't the output be 6? Thanks to anyone who could provide assistance.

Answer 1

First run
I = 1
X = 1
Print 1 5s
2nd run
I = 2
X = 3
Print 3 5s
3rd run
I=3
X=6
Print 6 5s

So 10 fives are printed.