Number Sum
The following grid of size 5x5 is partially complete with whole numbers from 1 to 7.
The sum of each row and column is shown on the edges of the grid.
Fill in the missing numbers to complete the grid.
| 16 | 17 | 21 | 25 | 18 | |
| 21 | 4 | 7 | 5 | ||
| 22 | 7 | 4 | 6 | 4 | |
| 24 | 7 | 2 | |||
| 22 | 4 | 2 | 7 | 7 | |
| 8 | 1 |