CAT Quant Practice Problems

Question: The infinite sum \(1+\frac{4}{7}+\frac{9}{{{7}^{2}}}+\frac{16}{{{7}^{3}}}+\frac{25}{{{7}^{4}}}+...\text{ }\infty \)

\(\frac{{27}}{{14}}\)
\(\frac{{21}}{{13}}\)
\(\frac{{49}}{{27}}\)
\(\frac{{256}}{{147}}\)
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