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

b b c – b – c a b b – a – b c a 

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

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

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 

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? 

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 

How Many such vowels are there in the above arrangement each of which is immediately followed by a numeral and immediately preceded by a consonant?