Ergänze die fehlenden Zahlen (2er Schritte) [1]
Zahlenfolgen
| 1. | 12 | < | < | < | 18 | < | |||
| 2. | < | < | 17 | < | 19 | < | |||
| 3. | < | 3 | < | 5 | < | < | |||
| 4. | < | 38 | < | < | 42 | < | |||
| 5. | < | 19 | < | 21 | < | < | |||
| 6. | < | 31 | < | < | < | 37 | |||
| 7. | < | 10 | < | 12 | < | < | |||
| 8. | 23 | < | < | < | 29 | < | |||
| 9. | 9 | < | < | < | < | 17 | |||
| 10. | 38 | < | 40 | < | < | < |