Introducing Alka to guests, Rakesh said, "Her father is the only son of my father". How is Alka related to Rakesh?

Appeared in: NHM UP Staff Nurse-2021 Shift-2nd

Explanation

The phrase 'the only son of my father' refers to the speaker himself, which is Rakesh.
The statement equates 'Her father' (Alka's father) with 'the only son of my father' (Rakesh).
Therefore, the statement simplifies to 'Alka's father is Rakesh'.
From this, it is clear that Alka is Rakesh's daughter.

Option B: A mother is from the generation preceding her child. The statement establishes that Rakesh is from the preceding generation relative to Alka.
Option C: If Alka were Rakesh's sister, they would share the same father. The statement would be 'Her father is my father,' not involving the 'only son' logic.
Option D: A niece is the daughter of one's sibling. The statement specifies Rakesh is the 'only son,' meaning he has no brothers whose daughter Alka could be.

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.
While not a clinical question, this type of logical reasoning is crucial for nurses. It hones the analytical skills needed to interpret complex patient histories, understand family dynamics for care planning, and make sound clinical judgments based on connecting different pieces of information.
What if the statement was 'Her father is a son of my father'? In this case, if Rakesh had a brother, Alka could be his niece. The word 'only' is the critical detail that eliminates this possibility and confirms the daughter relationship.

How to Approach the Question

First, identify the speaker (Rakesh) and the person being referred to (Alka).
Break the statement down into smaller, manageable parts. Start from the end of the sentence and work your way backward.
Solve the part 'the only son of my father'. From the speaker's (Rakesh's) perspective, this refers to himself.
Substitute this resolved part back into the main statement. The sentence now reads: 'Her father is Rakesh'.
Finally, analyze the simplified relationship: If Rakesh is Alka's father, then Alka is his daughter.

Concept Tested & Keywords

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Practise the full NHM UP Staff Nurse-2021 Shift-2nd

Attempt every question from this paper in a timed mock, then review the full solution for each one.