Select the letter-cluster that can replace the question mark (?) in the following series.
BRH, ZUD, ? , VAV, TDR, RGN
Answer & explanation
Correct answer: option 4
Explanation:
BRH, ZUD, ? , VAV, TDR, RGN
The logic followed here is :
B → (-2) → Z → (-2) → X → (-2) → V → (-2) → T → (-2) → R
R → (+3) → U → (+3) → X → (+3) → A → (+3) → D → (+3) → G
H → (-4) → D → (-4) → Z → (-4) → V → (-4) → R → (-4) → N
So, the letter-cluster that replaces the (?) to complete the series is "XXZ"