# This is a ODI series of number vs number

Level pending

Let for a series $T_{n}$ =$\sqrt{1+\frac{1}{n^{2}}+\frac{1}{(n+1)^{2}} }$; then the numerical value of $\frac{11S_{10}}{20}$ for the given series [ where $S_{10}$ denotes the sum of its first ten terms ] is:

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