Ergänze die fehlenden Zahlen (1er Schritte) [1]
Zahlenfolgen
| 1. | 15 | < | < | < | 18 | < | |||
| 2. | 3 | < | < | < | 6 | < | |||
| 3. | < | < | 18 | < | < | 20 | |||
| 4. | < | 14 | < | < | < | 17 | |||
| 5. | 12 | < | < | < | < | 16 | |||
| 6. | 5 | < | < | < | 8 | < | |||
| 7. | < | 11 | < | < | 13 | < | |||
| 8. | 12 | < | < | < | 15 | < | |||
| 9. | 7 | < | < | < | 10 | < | |||
| 10. | < | < | 16 | < | 17 | < |