$11 \times 468 \div 26 = ? + 8$

The number of times $79$ must be subtracted from $50000$ so that the remainder is $43759$ is:

$\sqrt{2601} - \sqrt{1156} + \sqrt{484} = ?$

$2 \times 256 \times ? = 8^{2} \times 10^{2} \times 2$

What is the unit digit in $\{(6374)^{1793} \times (625)^{317} \times (341)^{491}\}?$

One-fifth of a number is equal to $\frac{5}{8}$ of another number. If $35$ is added to the first number,it becomes four times the second number. The second number is