0 votes 0 votes Find the sum of the expression $\dfrac{1}{\sqrt{1}+\sqrt{2}}+\dfrac{1}{\sqrt{2}+\sqrt{3}}+\dfrac{1}{\sqrt{3}+\sqrt{4}}+ \dots \dots +\dfrac{1}{\sqrt{80}+\sqrt{81}}$ $7$ $8$ $9$ $10$ Quantitative Aptitude gateme-2013 numerical-ability number-system sequence-series + – piyag476 asked Feb 19, 2017 recategorized Mar 3, 2021 by Lakshman Bhaiya piyag476 1.4k points 4 42 68 answer See all 0 reply