State whether the following statements are true or false

Every whole number is a rational number.

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

$(\sqrt{5}+\sqrt{3})(\sqrt{5}-\sqrt{3})=\ldots \ldots \ldots$

Simplify:

$(\frac{3}{5})^4 + (\frac{8}{5})^{-12} + (\frac{32}{5})^{6}$

Rationalise the denominator of the following:

$\frac{\sqrt{6}}{\sqrt{2}+\sqrt{3}}$

Rationalise the denominator in each of the following

$\frac{1}{7-4 \sqrt{3}}$

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...........