Are my answers correct? If any one of them is wrong, just put the number and correct answer. Classifying Sequences (answer options: arithmetic, geometric, neither)

1. 5, 8, 11, 14,... arithmetic
2. 4, 12, 36, 108, geometric
3. 3, 1, 1/3, 1/9,... geometric
4. 1,2, 1, 2, 1,... neither
5. 6, 3, 1.5, ... neither
6. 5, 0, 10, 15,... neither
7. 4, 7, 10,... arithmetic
8. 1, 5, 25, 125,... geometric
9. 4, 7, 11, 18,... neither
10. 9, 5, 1, 3,... neither
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