1.

Sum of n terms of the series $$\sqrt 2 $$$$ + $$$$\sqrt 8 $$$$ + $$$$\sqrt {18} $$$$ + $$$$\sqrt {32} $$$$ + $$....... is

A. $\frac{{n\left( {n + 1} \right)}}{2}$$
B. $2n\left( {n + 1} \right)$$
C. $\frac{{n\left( {n + 1} \right)}}{{\sqrt 2 }}$$
D. $1$$
Answer» D. $1$$


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