Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which letter-cluster DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3, i.e., OIG.
Logic: BEK
B + 3 = E, E + 6 = K
All follow the same logic except option 3.