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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 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.)

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is
PT - MR

Reasoning: Identifying the Odd Letter Cluster Pair

The goal is to find the letter-cluster pair that does not follow the same logical pattern as the other three, based on English alphabetical order.

Analyzing Letter Cluster Patterns

We examine each option by assigning numerical positions to letters (A=1, B=2, ..., Z=26) and checking the relationships within and between the clusters.

  • Option 1: PT - MR
    • Cluster 1 (PT): P is the 16th letter, T is the 20th. Difference: \( 20 - 16 = 4 \).
    • Cluster 2 (MR): M is the 13th letter, R is the 18th. Difference: \( 18 - 13 = 5 \).
    • Relationship: M is 3 letters before P (\( 13 - 16 = -3 \)). R is 2 letters before T (\( 18 - 20 = -2 \)).
    • This pair deviates because the internal difference is 5 (not 4) and the relationship between the second letters is -2 (not -3).
  • Option 2: EI - BF
    • Cluster 1 (EI): E is the 5th letter, I is the 9th. Difference: \( 9 - 5 = 4 \).
    • Cluster 2 (BF): B is the 2nd letter, F is the 6th. Difference: \( 6 - 2 = 4 \).
    • Relationship: B is 3 letters before E (\( 2 - 5 = -3 \)). F is 3 letters before I (\( 6 - 9 = -3 \)).
    • This pair follows the pattern: internal difference is 4, and the difference between corresponding letters is -3.
  • Option 3: NR - KO
    • Cluster 1 (NR): N is the 14th letter, R is the 18th. Difference: \( 18 - 14 = 4 \).
    • Cluster 2 (KO): K is the 11th letter, O is the 15th. Difference: \( 15 - 11 = 4 \).
    • Relationship: K is 3 letters before N (\( 11 - 14 = -3 \)). O is 3 letters before R (\( 15 - 18 = -3 \)).
    • This pair follows the pattern.
  • Option 4: JN - GK
    • Cluster 1 (JN): J is the 10th letter, N is the 14th. Difference: \( 14 - 10 = 4 \).
    • Cluster 2 (GK): G is the 7th letter, K is the 11th. Difference: \( 11 - 7 = 4 \).
    • Relationship: G is 3 letters before J (\( 7 - 10 = -3 \)). K is 3 letters before N (\( 11 - 14 = -3 \)).
    • This pair follows the pattern.

Conclusion: Odd Pair Out

Three options (EI - BF, NR - KO, JN - GK) exhibit a consistent pattern: the difference between the letters within each cluster is 4, and the difference between the first letters of the two clusters is -3, as is the difference between the second letters. The pair PT - MR does not conform to this pattern.

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Similar Questions

  1. 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 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.)

  2. 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 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.)

  3. 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 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.)

  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 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.)

  6. 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 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.)

  7. 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.)

  8. 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 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.)

  9. 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 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.)

  10. 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.)

Important Questions from Classification

  1. Directions for the following 3 (three) items : consider the given information and answer the three items that follow. 

    A, B, C, D, E, F and G are Lecturers from different cities—Hyderabad, Delhi, Shillong, Kanpur, Chennai, Mumbai and Srinagar (not necessarily in the same order) who participated in a conference. Each one of them is specialized in a different subject, viz., Economics, Commerce, History, Sociology, Geography, Mathematics and Statistics (not necessarily in the same order). 

    Further 1. Lecturer from Kanpur is specialized in Geography 

    2. Lecturer D is from Shillong 

    3. Lecturer C from Delhi is specialized in Sociology 

    4. Lecturer B is specialized in neither History nor Mathematics 

    5. Lecturer A who is specialized in Economics does not belong to Hyderabad 

    6. Lecturer F who is specialized in Commerce belongs to Srinagar 

    7. Lecturer G who is specialized in Statistics belongs to Chennai 

    Who is specialized in Geography?

  2. A, B, C, D, E, F and G are Lecturers from different cities—Hyderabad, Delhi, Shillong, Kanpur, Chennai, Mumbai and Srinagar (not necessarily in the same order) who participated in a conference. Each one of them is specialized in a different subject, viz., Economics, Commerce, History, Sociology, Geography, Mathematics and Statistics (not necessarily in the same order). 

    Further 1. Lecturer from Kanpur is specialized in Geography 

    2. Lecturer D is from Shillong 

    3. Lecturer C from Delhi is specialized in Sociology 

    4. Lecturer B is specialized in neither History nor Mathematics 

    5. Lecturer A who is specialized in Economics does not belong to Hyderabad 

    6. Lecturer F who is specialized in Commerce belongs to Srinagar 

    7. Lecturer G who is specialized in Statistics belongs to Chennai 

    To which city does the Lecturer specialized in Economics belong?

  3. A, B, C, D, E, F and G are Lecturers from different cities—Hyderabad, Delhi, Shillong, Kanpur, Chennai, Mumbai and Srinagar (not necessarily in the same order) who participated in a conference. Each one of them is specialized in a different subject, viz., Economics, Commerce, History, Sociology, Geography, Mathematics and Statistics (not necessarily in the same order). 

    Further 1. Lecturer from Kanpur is specialized in Geography 

    2. Lecturer D is from Shillong 

    3. Lecturer C from Delhi is specialized in Sociology 

    4. Lecturer B is specialized in neither History nor Mathematics 

    5. Lecturer A who is specialized in Economics does not belong to Hyderabad 

    6. Lecturer F who is specialized in Commerce belongs to Srinagar 

    7. Lecturer G who is specialized in Statistics belongs to Chennai 

    Who of the following belongs to Hyderabad?

  4. In a school, there are five teachers A, B, C, D and E. A and B teach Hindi and English. C and B teach English and Geography. D and A teach Mathematics and Hindi. E and B teach History and French. Who teaches maximum numb, of subjects?

  5. How many triangles are there in the given figure?

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