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Question

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.)

This question was previously asked in
RRB ALP 2025 CBT 2 Mechanic Motor Vehicle Question Paper (28-Jul-2026) (Shift 1)
The correct answer is
MOU

Alphabetical Grouping Analysis

The question asks us to identify the letter cluster that does not follow the same alphabetical pattern as the others. We need to analyze the positional differences between consecutive letters in each cluster based on the English alphabet.

Letter Cluster Pattern Breakdown

We will examine each option by finding the position of each letter in the alphabet and calculating the difference between consecutive letters.

Cluster Letters & Positions Difference 1 (Letter 2 - Letter 1) Difference 2 (Letter 3 - Letter 2) Pattern
CFK C(3), F(6), K(11) \(6 - 3 = 3\) \(11 - 6 = 5\) +3, +5
MOU M(13), O(15), U(21) \(15 - 13 = 2\) \(21 - 15 = 6\) +2, +6
KNS K(11), N(14), S(19) \(14 - 11 = 3\) \(19 - 14 = 5\) +3, +5
RUZ R(18), U(21), Z(26) \(21 - 18 = 3\) \(26 - 21 = 5\) +3, +5

Identifying the Odd Cluster

Three clusters (CFK, KNS, RUZ) follow the pattern of differences +3 and +5 between consecutive letters.

The cluster MOU follows a different pattern of differences: +2 and +6.

Therefore, the letter cluster that DOES NOT belong to the group is MOU.

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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 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.)

  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 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.)

  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 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.)

  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-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.)
  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 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.)
  7. 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.)
  8. Find the odd word out of the given alternatives.
  9. Find the odd word out of the given alternatives.
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Important Questions from Classification

  1. Three of the following four 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.)

  2. Three of the following numbers are alike in a certain way and one is different. Pick the odd one out.

    (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/deleting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

  3. The following contains two pairs of words which are related to each other in a certain way. Three of the following four word-pairs are alike as these have the same relationship and thus form a group. Which word-pair does NOT belong to that group?
    (The words must be considered as meaningful English words and must not be grouped based on the number of letters/number of consonants/vowels in the word)

  4. Three of the following four options are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group?

    (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g., 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

  5. The following contains two pairs of words which are related to each other in a certain way. Three of the following four word-pairs are alike as these have the same relationship and thus form a group. Which word-pair does NOT belong to that group?
    (The words must be considered as meaningful English words and must not be grouped based on the number of letters/number of consonants/vowels in the word)

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