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

The sum of squares of two numbers is $90$ and the square of their difference is $46$. The product of the two numbers is

If $34N$ is a two-digit number divisible by $11$,then what is the value of $N$?

$18 \%$ of $125 \times 9 \%$ of $25 = ? - 100$

If $432P1$ is completely divisible by $9$,then what is the value of $P$?

$A$ number consists of two digits such that the digit in the ten's place is less by $2$ than the digit in the unit's place. Three times the number added to $\frac{6}{7}$ times the number obtained by reversing the digits equals $108$. The sum of the digits in the number is: