The number of letters skipped between adjacent letters in the series is odd. Which of the following series observes this rule?

Two letters in the word $TRESENCE$ have as many letters between them in the word as in the alphabet and in the same order. Which one of the two letters comes earlier in the alphabet?

How many pairs of letters are there in the word $ANSWER$,each of which has as many letters between them in the word as there are in the English language?

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
Write the above English alphabet in reverse order. First,cancel every second letter and then select that letter which divides the remaining letters of the alphabet into two equal parts. This letter is:

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 midway between the $22^{nd}$ letter from the left and the $21^{st}$ letter from the right?

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