| 1. | R W B
B W R
R W B |
2. |
| | | 6 | | | |
or | | | | 9 | | | |
| | 9 | | 7 | | |
| | | 1 | | 2 | | |
| 1 | | | | 2 | |
| | 5 | | | | 7 | |
| 4 | | 8 | | 3 | | 5 |
| 6 | | 4 | | 8 | | 3 |
|
| 3. | 6 acute angles |
4. | 594836271 |
| 5. | 1 10 4 8 2 6 5 9 3 7 |
6. | 6 flags (including one given) |
| 7. |
|
8. | Y B W R
R G Y B
B W R G
G Y B W
|
| 9. | 4 2 3
2 3 4
3 4 2 |
10. | 8 7 5 2 3 in one direction
6 9 5 1 4 in the other
There are other arrangements |