Answer:
20
Step-by-step explanation:
During the first iteration for the list [1, 4], numB = 1.
During the first iteration of the list [2, 3], numA = 2.
answer = answer + numA + numB
= 0 + 2 + 1
= 3
Since the list [2, 3] is in a nested loop, we need to first finish iterating the whole list before numB iterates to the next number, so numA = 3 this time and numB still stays at 1.
answer = answer + numA + numB
= 3 + 3 + 1
= 7
Now, numB moves to 4 and numA starts back at 2 again.
answer = answer + numA + numB
= 7 + 2 + 4
= 13
numB still says at 4 and numA moves to 3 since it is in a nested loop:
answer = answer + numA + numB
= 13 + 3 + 4
= 20
print(answer) will print the output 20.
Hope this helps :)