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)

U, B, I, P, W, ?


A) D

B) F

C) Q

D) Z

Answer:

Option A

Explanation:

$U + 7  \rightarrow B, B + 7 \rightarrow I, I + 7 \rightarrow P, P + 7\rightarrow W, W + 7\rightarrow D,$

Hence the answer is (a).