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? 

AO, BM, CK, _ EG. 

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

V, VIII, XI, XIV, ? , XX 

If each of the vowels and consonants in the word ‘TOMANDJERRY’ is changed to the next letter in the English alphabet then which of the following letter will be the sixth from the right end? 

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 .