Find the sum of first `n` term of a G.P.`1+(1)/(2)+(1)/(4)+(1)/(8)+...`

Find the sum of 10 terms of the G.P.1,(1)/(2),(1)/(4),(1)/(8),...

Find the sum of first five terms of the G.P. 1,2,4, ….

Find the sum of G.P. : 1-(1)/(2)+(1)/(4)-(1)/(8)+ . . . .. . . .. . to 9 terms .

Find the sum to n term of the G.P 1/2-1/4+1/8-1/16+ …....

[ If 2 is the sum of infinity of a G.P.,whose first clement is 1 ,then the sum of the first n terms is [ 1) (2^(n)-1)/(2^(n)), 2) (2^(n)-1)/(2^(n-1)), 3) (2^(n-1)-2)/(2), 4) (2^(n-1)-1)/(2^(n))]]

The second term of a G.P.is 3 and fifth term is (81)/(8) find the eighth term.Find the sum of first 15 terms of the G.P.1,2,4,8,.......

Find the sum of G.P. : 1-(1)/(3)+(1)/(3^(2))-(1)/(3^(3))+ . . . .. . . . . to n terms.

Find the sum to n terms of the G.P. 1,-a,a^2,-a^3,...(ane-1)