What number should replace the question mark?
| 4 | 2 | 3 | 4 |
| 2 | 1 | 6 | 4 |
| 5 | 1 | 2 | 5 |
| 2 | 8 | 3 | ? |
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 0
The numbers in each complete row add up to 13 (the columns do not follow one rule: they add up to 13, 12 and 14). In the last row \(2+8+3=13\) already, so the missing number is \(13-13=0\).
