Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair 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.)

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 1)
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  1. OP - KL
  2. LD - KH
  3. MN - IJ
  4. IJ - EF

Answer (Detailed Solution Below)

Option 2 : LD - KH
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Detailed Solution

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Common Diagram 28.01.2020 D1

The logic followed here is:

Option 1) OP - KL

qImage686d32d678859ba2846d9a05

Option 2) LD - KH

qImage686d32d778859ba2846d9a08

Option 3) MN - IJ

qImage686d32d778859ba2846d9a0b

Option 4) IJ - EF

qImage686d32d778859ba2846d9a0c

Thus, out of all 'LD - KH' is the odd one out.

Hence, "Option 2" is the correct answer.

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