Question Number 9869 by bansal22luvi@gmail.com last updated on 10/Jan/17
$${find}\:{the}\:{value}\:{of} \\ $$$$\underset{{n}=\mathrm{1}} {\overset{\mathrm{99}} {\sum}}\:\:\frac{{n}}{\mathrm{1}+{n}^{\mathrm{2}} +{n}^{\mathrm{4}} } \\ $$$$\left.{a}\right)\mathrm{0}.\mathrm{46}\:{and}\:\mathrm{0}.\mathrm{47} \\ $$$$\left.{b}\right)\mathrm{0}.\mathrm{47}\:{and}\:\mathrm{0}.\mathrm{48} \\ $$$$\left.{c}\right)\mathrm{0}.\mathrm{48}\:{and}\:\mathrm{0}.\mathrm{49} \\ $$$$\left.{d}\right)\mathrm{0}.\mathrm{49}\:{and}\:\mathrm{0}.\mathrm{50} \\ $$$$\boldsymbol{{kush}} \\ $$