Three of the following four letter-cluster pairs are alike in a certain way and so form a group. Which is the one letter-cluster pair that does not belong to that group?

1. A

   JS-NV

2. B

   NG-RI

3. C

   BK-FM

4. D

   ML-QN

Appeared in: DSSSB October 2024

Explanation

• the pair JS-NV because it is the only one that does not follow the established alphabetical shift pattern.
• The pattern followed by the other three pairs is a +4 shift for the first letter and a +2 shift for the second letter.
• In JS-NV, the first letter shifts by +4 (J -> N), which is correct.
• However, the second letter shifts by +3 (S -> V), deviating from the +2 rule (S + 2 would be U).

Why Other Options Were Wrong

• Option B: This option is incorrect because it perfectly follows the established pattern: N (+4) -> R and G (+2) -> I.
• Option C: This option is incorrect because it also adheres to the (+4, +2) pattern: B (+4) -> F and K (+2) -> M.
• Option D: This option is incorrect as it consistently follows the group's pattern: M (+4) -> Q and L (+2) -> N.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identifying the odd one out in a series of letter-cluster pairs based on a consistent alphabetical shift pattern as background academic context rather than a clinical decision trigger.
• This is a general intelligence question, not a clinical one.
• It tests logical reasoning and pattern recognition skills.
• These cognitive skills are crucial for nurses in clinical practice for tasks like identifying trends in a patient's vital signs, recognizing subtle changes in condition, or troubleshooting equipment issues.

How to Approach the Question

• First, analyze the relationship between the letters in the first pair (JS) and the second pair (NV) for one of the options to find a potential rule.
• Let's test option B: NG-RI. The shift from N to R is +4 letters in the alphabet. The shift from G to I is +2 letters.
• Hypothesize that the rule is (+4, +2) for the first and second letters, respectively.
• Now, apply this rule to all the other options to see which one does not conform.
• Check BK-FM: B (+4) -> F, K (+2) -> M. This fits.
• Check ML-QN: M (+4) -> Q, L (+2) -> N. This also fits.

Concept Tested & Keywords

• Concept Tested: Identifying the odd one out in a series of letter-cluster pairs based on a consistent alphabetical shift pattern.
• Stem keywords: letter-cluster pairs, alike, does not belong, group
• Lead-in keywords: Which is the one

Question ID

Qubk1rg7ksPi7fs5w6Hcjo

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