In a certain code language, 'A + B' means 'A is the father of B', 'A - B' means 'A is the husband of B', 'A x B' means 'A is the wife of B' and 'A ÷ B' means 'A is the daughter of B'. How is V related to Z if 'V + W x Y - Z'?

1. A

   Husband's sister

2. B

   Mother's brother

3. C

   Brother's wife

4. D

   Mother's mother

Appeared in: RRB Nsg. Superintendent - 29 April 2025 (Shift-3rd)

Explanation

• The expression begins with 'V + W'. According to the provided code, 'A + B' means 'A is the father of B'.
• This establishes that V is the father of W, which means V is a male.
• Examining the options, 'Husband's sister', 'Brother's wife', and 'Mother's mother' are all female relatives.
• The only option that describes a male relative is 'Mother's brother'.
• Since V is male, this is the only logically possible answer among the choices, a common shortcut in reasoning tests.

Why Other Options Were Wrong

• Option A: This option, 'Husband's sister' (sister-in-law), describes a female relative. The expression 'V + W' establishes that V is a father, hence male.
• Option C: This option, 'Brother's wife' (sister-in-law), describes a female relative. The expression 'V + W' establishes that V is a father, hence male.
• Option D: This option, 'Mother's mother' (maternal grandmother), describes a female relative. The expression 'V + W' establishes that V is a father, hence male.

Related Visual

• Visual 1: Flowchart - A flowchart demonstrating the gender elimination strategy. It would start with 'V + W' -> 'V is Father' -> 'V is Male', then branch to the four options, showing three being crossed out as 'Female' and one being selected as 'Male'.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain This question tests logical reasoning and the ability to solve blood relation puzzles using symbolic codes as background academic context rather than a clinical decision trigger.
• While not a clinical question, this type of logical reasoning is a component of many nursing entrance and competitive exams.
• Strong analytical and problem-solving skills are crucial in nursing for interpreting patient data, prioritizing care, and making sound clinical judgments under pressure.
• What if the options included more than one male relative (e.g., 'Father's brother')? In that case, the gender elimination shortcut would not work. You would have to attempt to diagram the full, albeit flawed, relationship 'V + W x Y - Z' and identify the most plausible intended connection, or recognize the question as unsolvable.

How to Approach the Question

• First, carefully read and understand the symbolic codes provided for each relationship (father, husband, wife, daughter).
• Analyze the given expression: 'V + W x Y - Z'. Start with the first part, 'V + W'.
• Use the code 'A + B' means 'A is the father of B' to determine the relationship and, crucially, the gender of V. In this case, V is a father, so V is male.
• Next, examine the answer options. Determine the gender of the relative described in each option.
• Compare the gender of V with the gender of the relatives in the options. If only one option matches, it is highly likely to be the correct answer. This is a valuable time-saving strategy.
• If multiple options match the gender, you would need to diagram the entire family tree based on the full expression to find the precise relationship.

Concept Tested & Keywords

• Concept Tested: This question tests logical reasoning and the ability to solve blood relation puzzles using symbolic codes.
• Stem keywords: A + B, A - B, A x B, A ÷ B, V + W x Y - Z
• Lead-in keywords: How is V related to Z

Question ID

Q6Wj0gFB3zYH-8V61NGI6b

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