Vul de getallen verder in, met sprongen van 2
Getallen
| 1. | < | < | < | 7 | < | 9 | |||
| 2. | < | 10 | < | < | < | 16 | |||
| 3. | 11 | < | < | < | 17 | < | |||
| 4. | < | 14 | < | < | < | 20 | |||
| 5. | 1 | < | < | 5 | < | < | |||
| 6. | < | 13 | < | < | < | 19 | |||
| 7. | < | 7 | < | 9 | < | < | |||
| 8. | 5 | < | < | 9 | < | < | |||
| 9. | < | 6 | < | < | 10 | < | |||
| 10. | < | < | 13 | < | 15 | < |