Direction: What should come in place of the questions mark (?) in the following letter series?
a, k, e, o, i, s,  ? __ ? _ , q , a , u , e 

In the English alphabet series, how many consonants are there between the second and the last vowel?

Direction: From the given alternatives select the word which cannot be formed using the letters of the given word.
IRREGULARITIES 

From the given alternatives select the word which cannot be formed using the letters of the given word.

CATERING 

Direction: Study the following arrangement carefully and answer the given question below. 

S D 9 5 E # K 6 T I 8 P 1 % A 2 C λ L M U3 W @ N 4 © J $ 7 F B 

Four of the following five are alike in a certain way based on their positions in the above arrangement and so form a group. Which is the one that does not belong to that group?

AZBY, ? , EVFU, GTHS