AZBY, ? , EVFU, GTHS 

d _ _td_s_d_st

If a meaningful word can be formed using 1st, 2nd, 4th and 8th letters of CAMPFIRE, what will be the second letter from the left of the newly formed word? If more than one word is formed, mark your answer as X. If no meaningful word can be formed, mark your answer as Z.

Which of the following letter-clusters will replace the question mark (?) in the given series to make it logically complete?
 WVE, UTG, SRI, QPK, ? 

Choose the word from the following options that cannot be formed using the letters of the given word.
FRAMEWORK

Directions: In each of the following questions, find out which of the letter series follows the given rule.
Number of letters skipped between adjacent letters in a series increases by one . 

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 questions given below.
C 3 # R A T 1 E J $ K @ F U 5 4 V I 6 © D 8 * H N 7 δ 2 W

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?