What is the value of 1 ( 0.1 )^2 + 1 ( 0.01 )^2 + 1 ( 0.5 )^2 + 1 ( 0.05 )^2

Answer: Option A

$$\begin{array}{rl}& \frac{1}{{\left(0.1\right)}^2}+\frac{1}{{\left(0.01\right)}^2}+\frac{1}{{\left(0.5\right)}^2}+\frac{1}{{\left(0.05\right)}^2}\\ & =\frac{1}{0.1\times 0.1}+\frac{1}{0.01\times 0.01}+\frac{1}{0.5\times 0.5}+\frac{1}{0.05\times 0.05}\\ & =100+10000+4+20\times 20\\ & =100+10000+4+400\\ & =10504\end{array}$$