#### Which term of the G.P. 3, -3√3, 9, -9√3, … is 729?

**Solution:**

#### Determine the 12th term of a G.P. whose 8th term is 192 and the common ratio is 2.

**Solution:**

**More Solutions:**

- The terms of a G.P. with first term a and common ratio r are squared.
- If a, b, c are in G.P. show that (1/a), (1/b), (1/c) are also in G.P.
- If a, b, c, d are in G.P., show that.
- The number of bacteria in a certain culture doubles every hour.
- Find the sum of 20 terms of the series 2 + 6 + 18 + …
- Find the sum of the first 10 terms of the geometric series.