UPSC CSE Prelims 2011

A, B, C, D and E are members of the same family. There are two fathers, two sons, two wives, three males and two females. The teacher was the wife of a lawyer who was the son of a doctor. E is not a male, neither also a wife of a professional. C is the youngest person in the family and D is the eldest. B is a male.

Whose wife is the teacher?

EXPLANATION

Correct Option (B)

To determine whose wife the teacher is, we must establish the family relationships based on the given clues:

The problem states that the teacher is the wife of a lawyer, who is the son of a doctor. This establishes a three-generational professional lineage: Doctor → Lawyer → Teacher's husband.
D is identified as the eldest person in the family. Given the professional chain, D is the most suitable candidate for the Doctor. D is male.
B is stated to be male. Following the professional lineage, B is the most suitable candidate for the Lawyer, who is the son of the Doctor (D).
Consequently, the Teacher must be the wife of B.
The family consists of A, B, C, D, and E, with two females. We have established B and D as males.
E is specified as not being male, making E a female. Crucially, E is also stated as not being a wife of a professional. Since B is a professional (a lawyer), E cannot be B's wife.
Therefore, the other female member, A, must be the Teacher and the wife of B.

Thus, the teacher is the wife of B.

Incorrect Options:

C is stated to be the youngest person in the family. Based on the derived family structure, C is the son of B and A, making C too young to be the husband of the teacher. C is male.
D is the eldest member and identified as the Doctor. The teacher is the wife of the lawyer, who is D's son, not D himself. D is male.
A is identified as the Teacher. The question asks for the teacher's husband, not the teacher herself. A is female.