Find the sum to indicated number of terms in each of the geometric progressions : `1,-a ,a^2-a^3,dotdotdotn`terms `(if a!=- 1)`

Find the sum to indicated number of terms in each of the geometric progressions : x^3,x^5,x^7,dotdotdotn terms (ifx!=+-1) .

Find the sum to indicated number of terms in each of the geometric progressions: 1,-a,a^(2)-a^(3),...n terms quad ( if a!=-1)

Find the sum to indicated number of terms in each of the geometric progressions: sqrt(7),sqrt(21),root(3)(7)

Find the sum to indicated number of terms of the geometric progressions given below:- 1,-a, a^2,-a^3 , ... n terms (if a ne -1 ).

Find the sum to indicated number of terms in each of the geometric progressions : 0.15,0.015,0.0015,...,20 terms.

Find the sum to indicated number of terms in each of the geometric progressions in Exercises 1, - a, a^2, - a^3, .......n terms (if a ne -1 )

Find the sum to indicated number of terms in each of the geometric progressions in Exercises 1, - a, a^2, - a^3, .......n terms (if a ne -1 )

Find the sum to indicated number of terms in each of the geometric progressions in Exercises 1, - a, a^2, - a^3, .......n terms (if a ne -1 )

Find the sum to indicated number of terms in each of the geometric progressions in Exercises 1, - a, a^2, - a^3, .......n terms (if a ne -1 )

Find the sum to indicated number of terms in each of the geometric progressions in Exercises 1, - a, a^2, - a^3, .......n terms (if a ne -1 )