Look at the square below containing the digits from 1 – 9. What unique feature does the square possess? (Suspect there could be more than one answer?)
1 |
2 |
3 |
8 |
9 |
4 |
7 |
6 |
5 |
1 |
2 |
3 |
8 |
9 |
4 |
7 |
6 |
5 |