The number of letters skipped between adjacent letters in the series decreases by $2$. Which of the following series follows this rule?

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

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
If the letters of the given alphabet interchange positions,so that $A$ takes the place of $Z$ and $Z$ takes the place of $A$; $B$ takes the place of $Y$ and $Y$ takes the place of $B$ and so on,what will be the thirteenth letter from the right?

If it is possible to make a meaningful word out of the second,the fourth,the fifth and the eighth letters of the word $ILLOGICAL$,then which of the following will be the third letter of the so formed word? If more than one word can be formed,then give $X$ as the answer. If no meaningful word can be formed,then give $Z$ as the answer.

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
If the first ten letters of the given alphabet are written in the reverse order,which of the following letters will be the seventh to the left of the twelfth letter from the right end?

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