Which letter cluster will replace the question mark (?) to complete the given series?
ZXVY, DXZY, ?, LXHY, PXLY
Answer & explanation
Correct answer: option 2

Explanation:
ZXVY, DXZY, ?, LXHY, PXLY
The logic followed here is :
Z → (-1) → D → (-1) → H → (-1) → L → (-1) → P
X → (+2) → X → (+2) → X → (+2) → X → (+2) → X
V → (-3) → Z → (-3) → D → (-3) → H → (-3) → L
Y → (-3) → Y → (-3) → Y → (-3) → Y → (-3) → Y
So, the letter-cluster that replaces the (?) to complete the series is "HXDY"