1. 

What should come in the place of question mark (?) in the following alpha numeric series?

AZ-21, CY-18, FX-15, JW-12, ?

A. PU-7
B. OV-9
C. PU-8
D. NV-9
E. OV-7

Answer: Option B

Explanation:

Pattern of the series as shown below

letter-and-symbol-series-logical-reasoning-practice-level---letter-and symbol-series-problems

Hence, the missing term is OV9.