Ramesh pointed to a photo and said, "He is the youngest son of my grandfather's only daughter. How is the person in the photo related to Ramesh?

Appeared in: AIIMS Manglagiri NO - 2019

Explanation

The statement "my grandfather's only daughter" can refer to two different people depending on whether the grandfather is maternal or paternal.
If the grandfather is on the mother's side, his only daughter is Ramesh's mother. Her son would be Ramesh's brother.
If the grandfather is on the father's side, his only daughter is Ramesh's aunt. Her son would be Ramesh's cousin.
The possible relationships are therefore Brother or Cousin.
Since neither 'Brother' nor 'Cousin' is listed in the options (Father, Uncle, Son), the correct answer must be 'None of these'.

Option A: A father is a male parent, which is one generation above. The person described is in the same generation as Ramesh (brother) or the same generation level (cousin).
Option B: An uncle is the brother of one's parent. The person in the photo is the son of Ramesh's mother or aunt, not the brother of his parents.
Option C: A son is a male child, which is one generation below. The person in the photo is Ramesh's brother or cousin, not his child.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Blood Relation Logic Puzzle as background academic context rather than a clinical decision trigger.
Logical reasoning questions are a standard component of nursing entrance exams, designed to assess critical thinking and problem-solving abilities.
This type of question tests the ability to deconstruct complex statements and consider multiple possibilities, a skill that is analogous to forming a differential diagnosis in a clinical setting.
What if? - If the statement was "my grandfather's only son", the 'only son' would be Ramesh's father. The son of Ramesh's father would be Ramesh himself or his brother.

How to Approach the Question

First, identify the speaker (Ramesh) and the person being described (the person in the photo).
Carefully break down the relationship phrase: "my grandfather's only daughter".
Consider all possible interpretations. The term 'grandfather' can be paternal (father's father) or maternal (mother's father). This is the key ambiguity.
Trace the relationship for each of the two possibilities. The paternal line leads to 'cousin', while the maternal line leads to 'brother'.
Compare the resulting relationships (brother, cousin) with the given options.
If no exact match is found among the options, the correct answer is 'None of these'.

Concept Tested & Keywords

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E6 Applied Sociology for Nurses TK Indrani p. 152-154

Practise the full AIIMS Manglagiri NO - 2019

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