In a certain code language,
'J + K' means 'K is the mother of J',
'J * K' means 'J is the brother of K',
'J × K' means 'K is the son of J',
'J ÷ K' means 'J is the daughter of K'.

If 'N × S * E + W ÷ F', then what is the relationship of N with F?

1. A

   Father

2. B

   Son-in-law

3. C

   Daughter

4. D

   Son

Appeared in: NHM UP Staff Nurse-2023 Shift-2nd

Explanation

• The expression 'E + W' means W is the mother of E, and 'N × S' and 'S * E' establish N as the other parent, making N the father and husband of W.
• The expression 'W ÷ F' means W is the daughter of F.
• Since N is the husband of W, and W is the daughter of F, N is F's son-in-law.

Why Other Options Were Wrong

• Option A: N is the father of S and E, but not of F. The relationship is reversed; F is a parent-in-law to N.
• Option C: The expression 'E + W' establishes W as the mother of E. Since N is the other parent, N must be the father, confirming N is male.
• Option D: N is related to F through marriage, not by blood. N is the husband of F's daughter (W), making him a son-in-law, not a son.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Coded Blood Relations as background academic context rather than a clinical decision trigger.
• While not a clinical question, this type of logical reasoning is crucial for nurses in making sound clinical judgments by systematically processing information and rules.
• It tests the ability to follow a defined protocol or set of instructions accurately, a skill essential for medication administration and patient care procedures.
• What if the expression was 'N * W'? This would mean N is the brother of W. If W is still the daughter of F, then N would be the son of F, completely changing the answer.

How to Approach the Question

• First, create a quick reference table or list for the meaning of each symbol (+, *, ×, ÷) to avoid confusion.
• Break down the long expression ('N × S * E + W ÷ F') into smaller, manageable pairs (e.g., N×S, S*E, E+W, W÷F).
• Decode each pair sequentially, determining the relationship and gender of each person. Note down these relationships.
• Draw a simple family tree diagram as you go. This visual aid helps in connecting the individuals and understanding the overall family structure.
• Once all pairs are decoded, trace the path from the first person (N) to the last person (F) on your diagram to find the final relationship.

Concept Tested & Keywords

• Concept Tested: Coded Blood Relations
• Stem keywords: coded blood relation, J + K, J * K, J × K, J ÷ K, N × S * E + W ÷ F
• Lead-in keywords: what is the relationship

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Qj6auKKhrxUGLz9lgnw1Yi

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