The sum of the first 4 terms of a G.P. is 40 and the sum of first 8 terms is 3280. Obtain the G.P.

If the sum of the first n terms of a G.P. = p and the sum of the first 2n terms = 3p, show that the sum of first 3n terms = 7p.

If the sum of first n terms of a G.P is p and the sum of the first 2n terms is 3p,show that the sum of first 3n terms is7p.

The sum of the first three terms of G.P. is 7 and the sum of their squares is 21. Determine the first five terms of the G:P.

The sum of the first three terms of a G.P. is 16 and the sum of the next three terms is 128. (i) Determine the first term and common ratio. (ii) Find also the sum of n terms of the G.P.

The sum of first two terms of a G.P. is 5/3 and the sum to infinity of the series is 3. Find the first term :

The sum of the first three terms of a G.P. is 21 and the sum of the next three terms is 168. Find the sum of first five terms.

The sum of the first eight terms of a G.P. is five xx the sum of the first four terms; then the common ratio is

The sum of first three terms of a G.P. is 7 and the sum of their squares is 21. Determine the first five terms of the G.P.

The sum of first three terms of a G.P. is 16 and the sum of the next three terms is 128. Determine the first term, the common ratio and the sum to n terms of the G.P.