| A | B |
| 14, 22, 30, 38, 46,... | yes; 8 |
| 10, 3, -4, -11, -18,... | yes; -7 |
| 2, 4.5, 7, 9.5, 12,... | yes; 2.5 |
| 81, 27, 9, 3, 1,... | no |
| 0, 3, 6, 9, 12,... | yes; 3 |
| -5, -1, 3, 7, 11,... | yes; 4 |
| 0, 1, 3, 6, 10,... | no |
| 9, 18, 27, 36, 45,... | yes; 9 |
| 15, 9, 3, -3, -9,... | yes; -6 |
|