Evaluate \( \lim _{n \rightarrow \infty} \frac{\sum_{r=1}^{n} \sqrt{r} \sum_{r=1}^{n} \frac{1}{\...

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Evaluate
\( \lim _{n \rightarrow \infty} \frac{\sum_{r=1}^{n} \sqrt{r} \sum_{r=1}^{n} \frac{1}{\sqrt{r}}}{\sum_{r=1}^{n} r} \)
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