Two marks exercise problems I — task. Mathematics State Board, Class 10.

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Find the sum of the first \(n\) terms of the G.P.

5, - 3, \frac{9}{5}, - \frac{27}{25}, ...

\(S_n\) \(=\)

\frac{i}{i} (i - {(\frac{i}{i})}^{i})

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6. Two marks exercise problems I