In this type of questions, a series of single, pairs or groups of letters or combinations of letters and numerals are given. The terms of the series form a certain pattern as regards the position of the letter in the English alphabet. Find the missing or wrong term in series 

1)

Y, B, T, G, O, ?


A) N

B) M

C) L

D) K

Answer:

Option C

Explanation:

The given sequence is a combination of two series:

I. Y, T, O  and    II. B, G, ? 

I consists of 2nd, 7th and 12th terms from the end of english alphabet, while II consists of  2nd, 7th and 12th  terms from the beginning of the english alphabet. So, the missing letter in II is the 12th letter from the beginning of the english alphabet ie., L.

Hence the answer is (c).