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}