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A weird Series

Algebra Level 3

${S_{n}=1+\dfrac{9}{4}+\dfrac{36}{9}+\dfrac{100}{16}+\dfrac{225}{25}+\dfrac{441}{36} +\ldots + \frac{(1+2+\ldots+n)^2}{n^2} }$

Evaluate $\large{S_{16}}$ .

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by Tanishq Varshney

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