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.

Number of letters skipped in between adjacent letters in the series are multiples of $3.$ Which of the following series observes this rule?

Arrange the given words in alphabetical order and choose the one that comes first.
Dictum,Diastole,Dictionary,Didactic,Dictate

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

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

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
How many $A$'s are there in the following series which are immediately followed by $B$ as well as immediately preceded by $Z$?
$A, M, B, Z, A, N, A, A, B, Z, A, B, A, Z, B, A, P, Z, A, B, A, Z, A, B$