Select the option that can replace the question mark (?) in the following series. NB, OA, PZ, QY, ? |
RX WR RW RS |
RX |
Explanation: NB, OA, PZ, QY, ? The logic followed here is : N → (+1) → Q → (+1) → P → (+1) → Q → (+1) → R B → (-1) → A → (-1) → Z → (-1) → Y → (-1) → X So, the letter-cluster that replaces the (?) to complete the series is "PX" |