Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster…

Question

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different. (The odd one out is not based on the number of consonants/vowels or their position.)

1. A. PRUZ
2. B. ORTU (Correct answer)
3. C. MORW
4. D. XZCH

Correct Answer

Option B — ORTU

Detailed Solution & Explanation

The correct answer is ORTU.

Key Points

• In three clusters the gaps between consecutive letters are +2, +3, +5: P(+2)R(+3)U(+5)Z, M(+2)O(+3)R(+5)W, X(+2)Z(+3)C(+5)H.
• ORTU has gaps +3, +2, +1, which breaks the pattern.
• Hence ORTU is the odd one out.

Additional Information

• Convert letter clusters to alphabet positions and the odd one out becomes arithmetic instead of pattern-spotting.
• Three clusters share the gap sequence +2, +3, +5; the fourth does not. Had ORTU followed the rule it would have been ORUZ.
• The instruction that the answer is *not based on the number of consonants or vowels* is a deliberate steer away from a common alternative rule.