$$\sqrt {\frac{{25}}{{81}} - \frac{1}{9}} = ?$$

A. $$\frac{2}{3}$$

B. $$\frac{4}{9}$$

C. $$\frac{{16}}{{81}}$$

D. $$\frac{{25}}{{81}}$$

Answer: Option B

Solution(By Examveda Team)

$$\eqalign{ & = \sqrt {\frac{{25}}{{81}} - \frac{1}{9}} \cr & = \sqrt {\frac{{25 - 9}}{{81}}} \cr & = \sqrt {\frac{{16}}{{81}}} \cr & = \frac{{\sqrt {16} }}{{\sqrt {81} }} \cr & = \frac{4}{9} \cr} $$