1. 

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

ZW3, UR6, PM10, KH15, ?

A. FC21
B. FB21
C. FC22
D. FC20
E. None of these

Answer: Option A

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 FC21.