Math Puzzle
Riddle: What single-digit number should go in the box with the question?
| 6 | 5 | 9 | 2 | 7 |
| 1 | 4 | 3 | 5 | ? |
| 8 | 0 | 2 | 8 | 1 |
Answer: The missing number is 4. Simply add the first and second rows together to get the third row value.
Source: https://riddles.com/index.php/3122
| 65, 927 | |
| + | 14, 354 |
| 80, 281 |
