In a certain code language, A+ B means 'A is the brother of B' A - B means 'A is the sister of B' A x B means 'A is the daughter of B' A ÷ B means 'A is the father of B' A # B means 'A is mother of B' Based on the above, how is L related to U if 'P + L ÷ D - O x U'?

1. A

   Father

2. B

   Daughter's Husband

3. C

   Husband

4. D

   Wife

Appeared in: NCL (Northern Coalfields Limited)-NO

Explanation

• The expression 'L ÷ D' establishes that L is the father of D, making L a male parent.
• The expression 'D - O' means D is the sister of O. This implies they share the same parents. Therefore, L is also the father of O.
• The expression 'O x U' means O is the daughter of U. This identifies U as a parent of O.
• Since L is the father of O and U is also a parent of O, U must be the mother of O.
• If L is the father and U is the mother of the same children (D and O), their relationship is that of husband and wife. The question asks how L is related to U, so L is the Husband.

Why Other Options Were Wrong

• Option A: L is the father of D and O, not the father of U.
• Option B: This relationship is not supported by the expression. L is from the parent generation relative to D and O, not married to one of them.
• Option D: L is male ('father of D'), so he cannot be a wife. U is the wife of L.

Related Visual

• Visual 1: Flowchart - A family tree diagram illustrating the relationships derived from the expression 'P + L ÷ D - O x U'. It would show L and U as parents, with D and O as their children.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Logical Reasoning - Blood Relations as background academic context rather than a clinical decision trigger.
• This is a logical reasoning question designed to test problem-solving and analytical skills, which are essential for nurses in clinical decision-making.
• While not a clinical scenario, the ability to systematically break down information and draw accurate conclusions is a core nursing competency.
• What if the expression was 'L x D'? In that case, L would be the daughter of D, completely changing the family structure and the final answer.

How to Approach the Question

• First, carefully read and understand the meaning of each symbol (+, -, x, ÷, #).
• Break down the given expression ('P + L ÷ D - O x U') into individual relationships.
• Translate each part of the expression one by one: 'P is the brother of L', 'L is the father of D', 'D is the sister of O', and 'O is the daughter of U'.
• Combine these individual relationships to build a family structure. It can be helpful to draw a simple family tree.
• Identify the direct relationship between the two individuals in question (L and U) based on the connections you've established.
• Select the option that correctly describes the derived relationship.

Concept Tested & Keywords

• Concept Tested: Logical Reasoning - Blood Relations
• Stem keywords: code language, A+ B, A - B, A x B, A ÷ B, P + L ÷ D - O x U
• Lead-in keywords: how is L related to U

Question ID

QikhoYQGwI1ff0X6bOyXRT

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