Vul de getallen verder in, met sprongen van 3
Getallen
| 1. | 18 | < | 21 | < | < | < | |||
| 2. | < | < | 9 | < | < | 15 | |||
| 3. | 7 | < | < | 13 | < | < | |||
| 4. | < | < | 11 | < | < | 17 | |||
| 5. | 5 | < | < | 11 | < | < | |||
| 6. | 1 | < | < | < | 10 | < | |||
| 7. | < | < | 13 | < | 16 | < | |||
| 8. | < | < | < | 23 | < | 26 | |||
| 9. | < | < | 11 | < | 14 | < | |||
| 10. | < | < | 21 | < | 24 | < |