Explain whether $95$ is divisible by $3$ or not.

Find $\mathrm{X}$ in the addition

$38X+4X2837$

In the following problem, replace the letters of English alphabet by digits (two or more letters may have the same value) to complete the procedure of division.

$$\begin{gathered} \underline{9) 4AB(5C \\ -DE} \\ 3F \\ \underline{ -GH } \\ 0 \end{gathered}$$

In the $4\times 5$ array given alongside, place the numbers from $1$ to $20$ (without repetition) so that a sequence (chain of numbers) is obtained from $1$ to $20$. You can move to the adjacent cell to the left, right, up or down but not diagonally. The positions of the numbers that already exist are fixed.

Fill in the circle with the correct digits.

Find the values of the letters in each of the following and give reasons for the steps involved.

$4A+98CB3$