Express the following in the form $\frac{p}{q},$ where $p$ and $q$ are integers and $q \neq 0$ :

$0.2$

For each question, select the proper option from four options given, to make the statement true : (Final answer only)

The rationalising factor of $4-\sqrt{5}$ is...........

Simplify the following:

$3 \sqrt{3}+2 \sqrt{27}+\frac{7}{\sqrt{3}}$

Subtract $: 0 . \overline{52}-0.4 \overline{6}$

Simplify:

$\frac{9^{\frac{1}{3}} \times 27^{-\frac{1}{2}}}{3^{\frac{1}{6}} \times 3^{-\frac{2}{3}}}$

State whether the following statements are true or false

Every whole number is a rational number.