If the letters of the word $OBSERVANT$ are interchanged,such that the first becomes ninth,second becomes eighth,and so on,and the position of the fifth letter remains unchanged,then what will be the new arrangement of letters?

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

If we make a meaningful word with the first,fourth,ninth and fourteenth letters of the word $ADMINISTRATION$,which of the following will be the third letter of that word from the right end of that word?

Study the letter series given below and answer the questions that follow:
$H, D, Y, S, M, W, N, B, Q, P, O, C, R, T, B, L, Z, V, E, G, U, F$
Which two neighbours in the given arrangement are farthest in the alphabetical order?

If the first and second letters in the word $DEPRESSION$ were interchanged,also the third and the fourth letters,the fifth and the sixth letters and so on,which of the following would be the seventh letter from the right?

$A$ 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.
$A, C, P, E, T, S$
$1, 2, 3, 4, 5, 6$