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Question

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 is the one that 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.)

The correct answer is
QR - MP

Letter Cluster Pair Analysis

The objective is to find the letter-cluster pair that deviates from a specific pattern shared by the others. This pattern relates to the alphabetical order of letters.

Pattern Identification Logic

The commonality among three of the options lies in the consistency of the alphabetical difference between the letters within each of the two pairs presented in an option. We calculate this difference for each pair and check for consistency within the option.

Alphabetical positions are assigned as A=1, B=2, ..., Z=26.

Option Analysis

Option Pair 1 Difference Pair 2 Difference Consistency
1. DI - AF P(I) - P(D) = $9 - 4 = 5$ P(F) - P(A) = $6 - 1 = 5$ Consistent (Both 5)
2. XB - UY P(B) - P(X) = $2 - 24 \equiv 4 \pmod{26}$ P(Y) - P(U) = $25 - 21 = 4$ Consistent (Both 4)
3. QR - MP P(R) - P(Q) = $18 - 17 = 1$ P(P) - P(M) = $16 - 13 = 3$ Inconsistent (1 $\neq$ 3)
4. KO - HL P(O) - P(K) = $15 - 11 = 4$ P(L) - P(H) = $12 - 8 = 4$ Consistent (Both 4)

Outlier Identification Conclusion

Three options (1, 2, and 4) share the characteristic that both letter-cluster pairs within them have the same internal alphabetical difference. Option 3 is the outlier because its pairs have different internal differences (1 and 3).

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Important Questions from Classification (Notes)

  1. Find the odd one out
  2. Consider the following four words, out of which three are alike in some manner and one is different.
    (A). Arrow
    (B). Missile
    (C). Sword
    (D). Bullet
    Choose the combination that has alike words.
  3. 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.)
  4. 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.)
  5. 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.)
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