$\sqrt{10} \times \sqrt{15}$ is equal to
$6 \sqrt{5}$
$10 \sqrt{5}$
$\sqrt{25}$
$5 \sqrt{6}$
Construct the square root spiral up to $\sqrt{6}$.
If $\frac{\sqrt{7}+\sqrt{5}}{\sqrt{7}-\sqrt{5}}=a+b \sqrt{35},$ find the value of $a$ and $b$.
Simplify: ${(256)^4}^{-\frac{3}{2}}$
Which of the following is irrational?
Find the value
$(343)^{-\frac{2}{3}}$