In each of the letter series, find the missing letters.

b b c – b – c a b b – a – b c a 

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

How many such numbers are there in the above arrangement each of which is immediately preceded by a letter but not immediately followed by a letter? 

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.
IMPASSIONABLE

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 following question, select the word which cannot be formed using the letters of the given word.
 ENCOURAGING