Ergänze die fehlenden Zahlen (3er Schritte) [2]
Zahlenfolgen
| 1. | < | 15 | < | < | 21 | < | |||
| 2. | 11 | < | < | < | 20 | < | |||
| 3. | 17 | < | < | < | < | 29 | |||
| 4. | < | < | 20 | < | < | 26 | |||
| 5. | 27 | < | 30 | < | < | < | |||
| 6. | < | < | 9 | < | < | 15 | |||
| 7. | 19 | < | < | < | < | 31 | |||
| 8. | 20 | < | < | < | 29 | < | |||
| 9. | < | < | < | 27 | < | 30 | |||
| 10. | 27 | < | < | 33 | < | < |