If a meaningful word can be formed by rearranging the letters $USCALA$,the first letter of the word so formed is the answer. If no such word can be formed,the answer is $X$.

How many $D$'s are there in the following series which are immediately followed by $W$ but not immediately preceded by $K$?
$K, D, C, W, K, D, W, N, K, G, D, W, W, D, H, K, V, D, W, Z, D, W$

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

If with the third,fourth,fifth,seventh and tenth letters of the word $PERSONALITY$,a meaningful word is formed,then the first letter of the word is the answer. If no word is possible,then $X$ is the answer.

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

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