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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.)

The correct answer is
OR−OU

The question asks us to identify the letter-cluster pair that does not follow the same alphabetical pattern as the others.

Pattern Analysis in Letter-Cluster Pairs

We need to examine the relationship between the letters within each pair and between the two clusters. Let's analyze the shift in alphabetical position for each option:

  • Option 1: ZC−AD
    • Z (26th letter) shifts forward by 1 (wrapping around) to A (1st letter). Calculation: $26 + 1 = 27 \rightarrow 1$.
    • C (3rd letter) shifts forward by 1 to D (4th letter). Calculation: $3 + 1 = 4$.
    • Both letters follow a +1 shift pattern.
  • Option 3: DG−EH
    • D (4th letter) shifts forward by 1 to E (5th letter). Calculation: $4 + 1 = 5$.
    • G (7th letter) shifts forward by 1 to H (8th letter). Calculation: $7 + 1 = 8$.
    • Both letters follow a +1 shift pattern.
  • Option 4: RU−SV
    • R (18th letter) shifts forward by 1 to S (19th letter). Calculation: $18 + 1 = 19$.
    • U (21st letter) shifts forward by 1 to V (22nd letter). Calculation: $21 + 1 = 22$.
    • Both letters follow a +1 shift pattern.

Identifying the Outlier Pair

Options 1, 3, and 4 share a common pattern: both the first letter of the first cluster and the second letter of the first cluster shift forward by 1 position in the English alphabet to form the corresponding letters in the second cluster.

Now let's examine Option 2:

  • Option 2: OR−OU
    • O (15th letter) shifts forward by 0 to O (15th letter). Calculation: $15 + 0 = 15$.
    • R (18th letter) shifts forward by 3 to U (21st letter). Calculation: $18 + 3 = 21$.
    • The shifts are not consistent (+0 and +3).

Since the shifts in Option 2 (0 and +3) are different from the consistent +1 shift observed in Options 1, 3, and 4, the pair OR−OU does not belong to the group.

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Important Questions from Classification

  1. In the following question, four number pairs are given. In each pair the number on left side of (-) is related to the number of the right side of (-) with some Logic/Rule/Relation. Three pairs are similar on basis of same Logic/Rule/Relation.
    Select the odd one out from the given alternatives. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its 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)

  2. 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.)

  3. 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.)

  4. 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)

  5. 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.)

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