Divide $8 \sqrt{15}$ by $2 \sqrt{3}$
$5 \sqrt{5}$
$4 \sqrt{4}$
$4 \sqrt{5}$
$5 \sqrt{4}$
State whether the following statements are true or false. Justify your answers.
$(i)$ Every irrational number is a real number.
$(ii)$ Every point on the number line is of the form $\sqrt m$ , where $m$ is a natural number.
$(iii)$ Every real number is an irrational number.
Find six rational numbers between $3$ and $4$.
Write the following in decimal form and say what kind of decimal expansion each has :
$(i)$ $\frac{36}{100}$
$(ii)$ $\frac{1}{11}$
$(iii)$ $4 \frac{1}{8}$
$(iv)$ $\frac{3}{13}$
$(v)$ $\frac{2}{11}$
$(vi)$ $\frac{329}{400}$
Are the square roots of all positive integers irrational ? If not, give an example of the square root of a number that is a rational number.
Rationalise the denominator of $\frac{5}{\sqrt{3}-\sqrt{5}}$.