Simplify: $\left[5\left(8^{\frac{1}{3}}+27^{\frac{1}{3}}\right)^{3}\right]^{\frac{1}{4}}$
$-5$
$25$
$5$
$-125$
Find three different irrational numbers lying between $\sqrt{3}$ and $\sqrt{5}$.
Rationalise the denominator in each of the following and hence evaluate by taking $\sqrt{2}=1.414, \sqrt{3}=1.732$ and $\sqrt{5}=2.236,$ upto three places of decimal.
$\frac{\sqrt{10}-\sqrt{5}}{2}$
Rationalise the denominator of the following:
$\frac{\sqrt{6}}{\sqrt{2}+\sqrt{3}}$
If $a=2+\sqrt{3},$ then find the value of $a-\frac{1}{a}$
Simplify:
$(\frac{1}{27})^{\frac{-2}{3}}$