The answer is B. The program prints:
36
Why?
range(1, 12, 2) starts at 1, goes up in steps of 2, and stops before 12. So the loop adds 1 + 3 + 5 + 7 + 9 + 11. The total is 36.
Trace table
A trace table follows the program step by step. Here’s this one:
| number | total after the loop body |
|---|---|
| 1 | 1 |
| 3 | 4 |
| 5 | 9 |
| 7 | 16 |
| 9 | 25 |
| 11 | 36 |
The code again
total = 0
for number in range(1, 12, 2):
total = total + number
print(total)Try it: change one number in the program and predict the new output before you run it.