The sum of the first three terms of a geometric progression is and its first term is

MATHEMATICS · Single correct · CBSE · Mathematics · Sequences and Series · Sequences and Series

Problem

The sum of the first three terms of a geometric progression is

28

and its first term is

4

. If the common ratio is positive, find the ratio. (a)

3

(b)

2

(c)

\sqrt{7}

(d)

7