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

From the word $BEHIND$,how many independent words can be made without changing the order of the letters and using each letter only once?

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

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

How many three-letter meaningful words can be formed from the letters of the word $TEAR$ beginning with $A$ without repeating any letter within that word?

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 and the second letters interchange their positions,and similarly the third and the fourth letters,the fifth and the sixth letters,and so on,which letter will be the seventeenth from your right?