Select the term that will come next in the following series.
MJG, QNK, URO, ______
Answer & explanation
Correct answer: option 3

Explanation:
MJG, QNK, URO, ______
The logic followed here is :
M → (+4) → Q → (+4) → U → (+4) → Y
J → (+4) → N → (+4) → R → (+4) → V
G → (+4) → K → (+4) → O → (+4) → S
So, the letter-cluster that replaces the (?) to complete the series is "YVS"