Rätsel und Puzzles
Lösung 55
| 1. | 8, 11, 5, 10, 13, 7, 14, 17, 11, ... | (+3, -6, x2, +3, -6, x2, ...) |
| 2. | 1, 2, 2, 4, 8, 11, 33, 37, ... | (+1, x1, +2, x2, +3, x3, ...) |
| 3. | 2, 5, 10, 17, 28, 41, 58, ... | (+ nächste Primzahl) |
| 4. | 1, 3, 4, 7, 19, 47, 180, ... | (1x3+4=7; 3x4+7=19, ...) |
| 5. | 1, 4, 9, 7, 7, 9, 13, 10, ... | (Ziffernsummen der Quadratzahlen) |