Which letter-cluster will replace the question mark (?) to complete the given series?
XHFM, TEDL, PBBK, ?, HVXI
Answer & explanation
Correct answer: option 2

Explanation:
XHFM, TEDL, PBBK, ?, HVXI
The logic followed here is :
X → (-4) → T → (-4) → P → (-4) → L → (-4) → H
H → (-3) → E → (-3) → B → (-3) → Y → (-3) → V
F → (-2) → D → (-2) → B → (-2) → Z → (-2) → X
M → (-1) → L → (-1) → K→ (-1) → J → (-1) → I
So, the letter-cluster that replaces the (?) to complete the series is "LYZJ"