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Asked: August 20, 20202020-08-20T12:50:55+01:00 2020-08-20T12:50:55+01:00In: NCERT 11th Maths

9. Find the sum to indicated number of terms in each of the geometric progressions : $1, -a, a^2, -a^3, ..... n$ terms(if a $\neq$ -1).

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