DIRECTIONS: In the following question, find the missing letters in the given series.
AOP, CQR, EST, GUV, ? 

Which is the next term in the following sequence of letter clusters?
PLaN, OJbP, NHcR, MFdT, LDeV,

How many pair of letters are there in the word “EFFECTIVE” which has as many letters (in both forward and backward direction) in between as they have in English alphabet series?

What will come in place of question mark(?) in the following number series?

BCF, CDG , DEH, ?

Complete the following series.
C3D, E6F, G9H, I12J, ?

If it is possible to make a meaningful word of English together with the first, fifth and eighth letters of the word APTITUDES, how many total words can be made of this type? 

Arrange the following words in the order in which they appear in an English dictionary.
1. General
2. Gender
3.Gaket
4.Genial
5.Gather

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
Constable, Head constable, ?, Inspector