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 letter-cluster 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. MSO.
Option 1: RXU → R + 3 = U; X - 3 = U
Option 2: IOL → I + 3 = L; O - 3 = L
Option 3: MSO → M + 3 = P; S - 3 = P
Option 4: FLI → F + 3 = I; L - 3 = I
All follow the same logic except option 3.