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

Arrange the given words in alphabetical order and choose the one that comes first: Wasp,Wrist,Waste,War,Wrinkle.

If it is possible to make only one meaningful word with the first,fifth,ninth and the tenth letters of the word $'AUTOMOBILE'$,which would be the second letter of the word from the right? If more than one such word can be formed,give $'Y'$ as the answer. If no such word can be formed,give $'Z'$ as your answer.

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

In the following series,count each $N$ which is immediately followed by $X$ but $X$ is not immediately followed by $T.$ How many such $N's$ are there?
$N, X, N, T, Q, M, N, X, T, M, X, N, X, C, N, Q, M, N, N, X, Q, N, X, T, X, N, A, M, X, N, X, M$

Study the letter series given below and answer the question that follows:
$H, D, Y, S, M, W, N, B, Q, P, O, C, R, T, B, L, Z, V, E, G, U, F$
Which is the only letter that occurs twice?