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

If any two letters in the word $'PRISON'$ have as many letters between them in the word as there are in the English alphabet,they form an alpha-pair. How many such alpha-pairs are there in the word $'PRISON'$?

How many meaningful English words can be made with the letters $ENAL$ using each letter only once in each word?

After arranging the letters of the word $FOLK$ in alphabetical order,if each letter is substituted by the letter immediately preceding to it in the English alphabet,what will be the resultant form of the word?

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

$A$ meaningful word is formed if we take the first,fourth,fifth,seventh,tenth,eleventh,and twelfth letters of the word $FELICITATIONS$. Which of the following will be the fifth letter of that word from the right end?