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## Homework Statement

The first three terms of a GP are X,X+2,X+3. The value of X and the fifth term is.[/B]

(a)-4,1/4

(b)4,1/4

(c)2,1/4

(d)-2,-1/4

## Homework Equations

## The Attempt at a Solution

(x+2/x)=(x+3)/(x+2)

(x+2)

^{2}=x

^{2}+3x

x

^{2}+2x+4=x

^{2}+3x

x=4

so i think r=(x+2)/x

putting x=4

r=3/2

also r=(x+3)/(x+2)

putting x=4

r=7/6

why the common ratio is different if it is a G.P ?