Answer: Python Puzzler #1889

The answer is B. The program prints:

1
2
3
Meow
5
6
7
Meow
9
10

Why?

Every number that divides exactly by 4 (remainder 0) is replaced by ‘Meow’. All the others are printed as they are.

Trace table

A trace table follows the program step by step. Here’s this one:

number	number % 4	printed
1	1	1
2	2	2
3	3	3
4	0	Meow
5	1	5
6	2	6
7	3	7
8	0	Meow
9	1	9
10	2	10

The code again

for number in range(1, 11):
    if number % 4 == 0:
        print("Meow")
    else:
        print(number)