1. 

In the following question, a letter series is given. Some of the letters of the series are missing. This missing letters are given in same order as one of the four/five alternatives below the series. Find out the correct alternative.

ZX__TR__NLJ__FD__
A. VPHB
B. VRHB
C. UPJB
D. VPJB

Answer: Option A

Explanation:

Pattern of the series as shown below

ZXVTRPNLJHFDB => VPHB

The sequence is made of (-2) letters, respectively.

Hence, the missing letters are VPHB.