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 sixteenth to the right of the letter which is fourth to the left of $I$?

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

If you pick up from the following alphabet,the sixth and the fourteenth letters from your right and then pick up the fifth and twentieth letters from your left and form a meaningful word,what is the first letter of that word?
$A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z$

Number of letters skipped in between adjacent letters in the series increases by one. Which of the following series observes this rule?

Which letter will be sixth to the right of the third letter from the left of the letter which is exactly in the middle of the letters in the series given below?
$A, B, C, D, E, Z, Y, X, W, V, Q, R, S, T, U, F, G, H, I, J, K, L, M, N, O, P, A$

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