Vul de getallen verder in, met sprongen van 2
Getallen
| 1. | < | < | < | 18 | < | 20 | |||
| 2. | 115 | < | 117 | < | < | < | |||
| 3. | 434 | < | 436 | < | < | < | |||
| 4. | < | 140 | < | 142 | < | < | |||
| 5. | < | < | 983 | < | < | 987 | |||
| 6. | < | 378 | < | < | 382 | < | |||
| 7. | 441 | < | < | < | < | 449 | |||
| 8. | < | < | < | 270 | < | 272 | |||
| 9. | < | < | 864 | < | 866 | < | |||
| 10. | < | 21 | < | 23 | < | < |