Vul de getallen verder in, met sprongen tussen 20 en 50
Getallen
| 1. | 425 | < | < | 509 | < | < | |||
| 2. | 601 | < | < | < | < | 689 | |||
| 3. | < | 501 | < | 541 | < | < | |||
| 4. | 858 | < | < | < | 930 | < | |||
| 5. | < | < | < | 889 | < | 913 | |||
| 6. | < | < | 310 | < | 336 | < | |||
| 7. | < | 361 | < | 402 | < | < | |||
| 8. | < | 918 | < | < | < | 999 | |||
| 9. | < | < | < | 321 | < | 353 | |||
| 10. | < | < | < | 652 | < | 699 |