Find \( S_{\infty} \), for each of the following infinite G.P.s :
\[
5, \frac{20}{7}, \frac{80}{...
Find \( S_{\infty} \), for each of the following infinite G.P.s :
\[
5, \frac{20}{7}, \frac{80}{49} \text {, }
\]
to \( \infty \)
\( \mathrm{P} \)
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