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: 05 Jun, 2025 Shift 1)
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  1. MU - KH
  2. HL - JN
  3. SW - UY
  4. NR - PT

Answer (Detailed Solution Below)

Option 1 : MU - KH
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Detailed Solution

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Positional value Table

Given:

Option 1) MU - KH

M(13) U(21)
↓ -2 ↓ -13
K(11) H(8)

Option 2) HL - JN

H(8) L(12)
↓ +2 ↓ +2
J(10) N(14)

Option 3) SW - UY

S(19) W(23)
↓ +2 ↓ +2
U(21) Y(25)

Option 4) NR - PT

N(14) R(18)
↓ +2 ↓ +2
P(16) T(20)

Options 2, 3, and 4 follow the same pattern where each letter shifts forward by 2 positions. Option 1 follows a different pattern of making it the odd one out.

Hence, the correct answer is "Option 1".

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