Verbal Reasoning - Mental Ability Questions

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

AB, FG, KL, PQ, ?

What will be the next set of alphabets in the series? AZ, BY, CX, ___

If A denotes −, C denotes ×, D denotes ÷, E denotes +, then 14C3A12E4D2=?

Six persons L, M, N, O, P and Q sit in a linear row adjacent to each other facing north. Three persons sit between Q and P. N sits immediate left of Q. Two persons sit between N and M. How many persons sit to the left of M? 

In a certain code language, “FRONT” is written as “618151420” and “BORNE” is written as “21518145”. How is “MORNS” written in that code language?

Identify the diagram that best represents the relationship among the given classes.
Country, State, City

Arrange the given words in the sequence in which they occur in the dictionary.
1. Clocklipe
2. Cloddier
3. Clodpates
4. Clodpolls
5. Clockwise

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

12 V 3 M 441 L 21 S 8 = ?