Simplify $7^{\frac{1}{4}} \cdot 12^{\frac{1}{4}}$.

Which of the following is equal to $x$?

Rationalise the denominator of the following number:
$\frac{1}{5+2 \sqrt{3}}$

For each question,select the proper option from four options given,to make the statement true: $.............$ is a rational number between $7$ and $8$.

State whether the following statement is true or false:
Every whole number is a natural number.

Fill in the blanks to make the following statement true: The decimal expansion of $\frac{2}{3}$ is of $\ldots \ldots$ type.