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

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?

Find which one word cannot be made from the letters of the given word: $DISAPPOINTMENT$.

If in the word $DISTANCE$ all the vowels are replaced by the next letter and all the consonants are replaced by the previous letter and then all the letters are arranged alphabetically,which letter will be third from the right?

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
Which letter is seventh to the right of the eighteenth letter from the right end of the alphabet?

How many such pairs of letters are there in the word $ELEVATION$,each of which have as many letters between them in the word as they have between them in the English alphabet?