There are six persons P, Q, R, S, T and U. R is the sister of U. Q is the brother of T's husband. S is the father of P and grandfather of U. There are 2 fathers, 3 brothers and a mother in the group. Find out who is the mother in a given group?

1. A

   Q

2. B

   P

3. C

   R

4. D

   T

Appeared in: AIIMS Nagpur NO - 2018

Explanation

• The statement 'S is the father of P and grandfather of U' establishes P as the father of U.
• The statement 'R is the sister of U' confirms that P is the father of both R and U.
• The group must contain one mother. The clue 'Q is the brother of T's husband' identifies T as a married female.
• Connecting these facts, if P is the father, his wife T must be the mother of his children, U and R.
• This structure fulfills all constraints: 2 fathers (S, P), 3 brothers (P, Q, U), and 1 mother (T).

Why Other Options Were Wrong

• Option A: Q is a male. The statement 'Q is the brother of T's husband' identifies him as the brother of P, making him the uncle of U and R, not the mother.
• Option B: P is a male. The statement 'S is the father of P and grandfather of U' identifies P as the father of U and R, not the mother.
• Option C: R is a female, but she belongs to the third generation. The statement 'R is the sister of U' identifies her as the daughter of P and T, not the mother.

Related Visual

• Visual 1: Family Tree Diagram - A diagram showing the three generations and the relationships between S, P, Q, T, U, and R to visually represent the solution.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Logical Reasoning - Family Relationships and Blood Relations as background academic context rather than a clinical decision trigger.
• This question tests logical deduction and critical thinking, not clinical knowledge.
• Nurses use logical reasoning daily to analyze patient data, connect symptoms to underlying causes, and prioritize care.
• Strong problem-solving skills are essential for troubleshooting equipment, managing complex medication schedules, and responding to emergencies effectively.

How to Approach the Question

• First, carefully read all the statements and identify the people and the relationships described.
• Start by drawing a family tree, beginning with the most definitive statement, which is 'S is the father of P and grandfather of U'. This sets up three generations.
• Add other direct relationships to the tree, such as 'R is the sister of U'.
• Use indirect clues like 'Q is the brother of T's husband' to link individuals.
• Finally, use the numerical constraints ('2 fathers, 3 brothers and a mother') to verify your structure and deduce any missing information, such as the gender of U.
• Once the family tree is complete and verified, identify the person who fits the role of 'mother'.

Concept Tested & Keywords

• Concept Tested: Logical Reasoning - Family Relationships and Blood Relations
• Stem keywords: six persons, P, Q, R, S, T, U, sister, brother, husband, father, grandfather, mother
• Lead-in keywords: Find out who is the mother

Question ID

Qax5q6zUc8N1vtuaEdXFoQ

Copy ID