1.

The sum of n terms of the series \[\frac{1}{1+\sqrt{3}}+\frac{1}{\sqrt{3}+\sqrt{5}}+\frac{1}{\sqrt{5}+\sqrt{7}}+.........\] is   [UPSEAT 2002]

A. \[\sqrt{2n+1}\]
B. \[\frac{1}{2}\sqrt{2n+1}\]
C. \[\sqrt{2n+1}-1\]
D. \[\frac{1}{2}(\sqrt{2n+1}-1)\]
Answer» E.


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