Select the letter-cluster that can replace the question mark (?) in the following series.
AR, CP, ?, GL, IJ, KH
Answer & explanation
Correct answer: option 3
Explanation:
AR, CP, ?, GL, IJ, KH
The logic followed here is :
A → (+2) → C → (+2) → E → (+2) → G → (+2) → I
R → (-2) → P → (-2) → N → (-2) → L → (-2) → J
So, the letter-cluster that replaces the (?) to complete the series is "EN"