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Recent questions tagged sequence-series

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Find the odd one from the following group: $\begin{array}{llll} W,E,K,O & I,Q,W,A & F,N,T,X & N,V,B,D \end{array}$ $W,E,K,O$ $I,Q,W,A $ $F,N,T,X $ $N,V,B,D$
asked Feb 19, 2017 in Analytical Aptitude Arjun 24.6k points
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Find the sum of the expression $\dfrac{1}{\sqrt{1}+\sqrt{2}}+\dfrac{1}{\sqrt{2}+\sqrt{3}}+\dfrac{1}{\sqrt{3}+\sqrt{4}}+ \dots \dots +\dfrac{1}{\sqrt{80}+\sqrt{81}}$ $7$ $8$ $9$ $10$
asked Feb 19, 2017 in Numerical Ability piyag476 1.4k points
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