Which letter-cluster will replace the question mark (?) in the following series?
SQO, LJH, ECA, ?
Answer & explanation
Correct answer: option 2
Explanation:

Explanation:
SQO, LJH, ECA, ?
The logic followed here is :
S → (-7) → L → (-7) → E → (-7) → X
Q → (-7) → J → (-7) → C → (-7) → V
O → (-7) → H → (-7) → A → (-7) → T
So, the letter-cluster that replaces the (?) to complete the series is "XVT'