The 8th term of the G.P. 1, 3, 9, 27, ………. is :

1. 729

2. 2187

3. 6561

4. none of these

The nth term of the G.P. x³, x⁵, x⁷, …….. is :

1. x^{(2n - 1)}

2. x^{(2n + 3)}

3. x^{(2n + 1)}

4. x^{3n + 2}

The first term and the common ratio of the G.P. 3, $\dfrac{3}{2}, \dfrac{3}{4}$, ………. are respectively :

1. 3 and 2

2. 3 and $\dfrac{1}{2}$

3. 3 and $\dfrac{3}{2}$

4. $\dfrac{3}{2}$ and $\dfrac{1}{2}$

Which term of the G.P. 2, 8, 32, 128, …….. is 131072?

1. 9th

2. 10th

3. 8th

4. 12th