The greatest number among $3^{50}, 4^{40}, 5^{30}$ and $6^{20}$ is

Find a number nearest to $9231$ which is exactly divisible by $3$ as well as by $11.$

$\frac{3}{23}$ of $\frac{5}{12}$ of $1104 = ?$

$\frac{(0.146+0.092)^{2}+(0.092-0.146)^{2}}{0.073 \times 0.073+0.046 \times 0.046}$ is equal to

If $2 \frac{1}{2}$ is added to a number and the sum is multiplied by $4 \frac{1}{2}$,and $3$ is added to the product,and then dividing the sum by $1 \frac{1}{5}$,the quotient becomes $25$. What is the number?

$A$ number is of two digits. The position of digits is interchanged and the new number is added to the original number. The resultant number will always be divisible by