Arrange the given words in alphabetical order and choose the one that comes in the middle.

$A$ group of letters is given which are numbered $1, 2, 3, 4, 5$ and $6$. Below are given four alternatives containing combinations of these numbers. Select the combination of numbers so that the letters arranged accordingly form a meaningful word.
$A, M, D, E, N, R$
$1, 2, 3, 4, 5, 6$

If it is possible to make a meaningful word with the first,the fourth,the seventh and the eleventh letters of the word $INTERPRETATION$,which of the following will be the third letter of that word? If more than one such word can be made,give $M$ as the answer and if no such word can be made,give $X$ as the answer.

How many pairs of letters are there in the word $PRESENTMENT$ which have as many letters between them in the word as in the alphabet?

Number of letters skipped in between adjacent letters in the series is in the order of $1^{2}, 2^{2}, 3^{2}$. Which of the following series observes the rule given above?

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
If the alphabet is written in the reverse order and every alternate letter starting with $Y$ is dropped,which letter will be exactly in the middle of the remaining letters of the alphabet?