The value of $$\sqrt {400} $$  + $$\sqrt {0.0400} $$   + $$\sqrt {0.000004} $$   = ?

A. 0.222

B. 20.22

C. 20.202

D. 2.022

Answer: Option C

Solution(By Examveda Team)

$$\eqalign{ & {\text{According to question,}} \cr & \sqrt {400} + \sqrt {0.0400} + \sqrt {0.000004} \cr & \Rightarrow 20 + 0.2 + 0.002 \cr & \Rightarrow 20.202 \cr} $$