Geometric sequences and series

1. 1.
   What is the 7th term of 5, 10, 20, 40, …
2. 2.
   Find the sum of the first 5 terms of 4, 8, 16, 32, …
3. 3.
   Find the sum of the first 6 terms of 1, -2, 4, -8, …
4. 4.
   What is the 5th term of 3, 6, 12, 24, …
5. 5.
   What is the 6th term of 2, 6, 18, 54, …
6. 6.
   What is the 6th term of 3, 9, 27, 81, …
7. 7.
   What is the 5th term of 4, 8, 16, 32, …
8. 8.
   Find the sum of the first 6 terms of 1, 3, 9, 27, …
9. 9.
   Find the sum of the first 7 terms of 3, 6, 12, 24, …
10. 10.
    What is the 7th term of 3, -6, 12, -24, …
11. 11.
    What is the 6th term of 4, 12, 36, 108, …
12. 12.
    Find the sum of the first 6 terms of 3, -6, 12, -24, …
13. 13.
    Find the sum of the first 6 terms of 4, -8, 16, -32, …
14. 14.
    What is the 7th term of 3, 6, 12, 24, …
15. 15.
    Find the sum of the first 6 terms of 2, 4, 8, 16, …
16. 16.
    What is the 5th term of 3, 9, 27, 81, …
17. 17.
    What is the 7th term of 4, 8, 16, 32, …
18. 18.
    Find the sum of the first 5 terms of 5, 10, 20, 40, …
19. 19.
    What is the 5th term of 5, 15, 45, 135, …
20. 20.
    Find the sum of the first 5 terms of 5, 15, 45, 135, …

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