Write down the following quotients in descending order:
$1.$ $\frac{368.39}{17}$
$2.$ $\frac{170.50}{62}$
$3.$ $\frac{875.65}{83}$

$\frac{6^{2}+7^{2}+8^{2}+9^{2}+10^{2}}{\sqrt{7+4 \sqrt{3}}-\sqrt{4+2 \sqrt{3}}}$ is equal to

If $x - (1/x) = \sqrt{13}$,then what is the value of $x^5 - (1/x^5)$?

If the numbers $\sqrt[3]{9}, \sqrt[4]{20}, \sqrt[6]{25}$ are arranged in ascending order,then the correct arrangement is:

What value will come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value)
$21 + 39 \times 2.9 + 8.99 = ?$

What approximate value will come in place of the question mark $(?)$ in the given equation? (You are not expected to calculate the exact value)
$\frac{1810}{24.05} \times 7.95 + 11.02 \times 18.88 = ? - 306$