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)

AB, DEF, HIJK, ?, STUVWX


A) LMNO

B) LMNOP

C) MNOPQ

D) QRSTU

Answer:

Option C

Explanation:

The number of letters in the terms of the given series increases by one at each step. The first letter of each term is two steps ahead of the last letter of the preceding term. However, each term consists of consecutive letters in order. Hence the answer is (c)