Find the sum of the following geometric series :
3-9+27-81+… to 8 terms

Find the sum of the following geometric progression: 1,3,9,27, to 8 terms.

Find the sum of the following geometric progression: 1,3,9,27,… to 8 terms.

Find the sum of the following geometric series: x^3, x^5, x^7, to\ n terms

Find the sum of the following geometric series: 2/9-1/3+1/2-3/4+ to\ 5\ terms.

Find the sum of the following geometric series: 1,\ -a,\ a^2,-a^3,... to\ n terms (a!=1)

Find the sum of the following series : 3.8+6.11+9.14+ .... to n terms .

Find the sum of the following series 1 + 3 + 9….... to tenth term

Find the sum of the following geometric series: 1,-1,a^(2),-a^(3),rarr n terms (a!=1)

Find the sum of each of the following infinite geometric series, if it exists : (1)/(3) - (2)/(9) + (4)/(27) - (8)/(81) +…oo

Find the sum of 7 terms of following series 1,3,9,27,81…… .