UPSC Prelims 2011·CSAT·Logical Reasoning·Blood Relations

Read the following passage and answer that follow: 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 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. How is D related to E?

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Last updated 8 Jul 2026, 4:39 pm IST
  1. AHusbandCorrect
  2. BSon
  3. CFather
  4. DWife

Explanation

Here's a step-by-step breakdown:

  1. Analyze the family composition:

    • 5 members: A, B, C, D, E.
    • 3 males, 2 females.
    • Two fathers, two sons, two wives. This structure implies a 3-generation family with two married couples.
  2. Identify the professional roles and their relationships:

    • "The teacher was the, wife of a lawyer who was the son of a doctor."
    • This establishes a 3-generation lineage: Doctor (male) -> Lawyer (male, son of Doctor) -> Teacher (female, wife of Lawyer).
  3. Combine with family composition:

    • We have Doctor (M), Lawyer (M), Teacher (F). This is 2 males, 1 female.
    • To get 3 males and 2 females, we need one more male and one more female.
    • The additional female must be the wife of the Doctor (let's call her Grandmother).
    • The additional male must be the child of the Lawyer and Teacher (let's call him Child).
    • So, the family roles are: Doctor (M), Grandmother (F), Lawyer (M), Teacher (F), Child (M).
  4. Map specific members to roles using clues:

    • "C is the youngest person in the family": C = Child (M).
    • "D is the eldest": D = Doctor (M) or Grandmother (F).
    • "B is a male": B = Doctor (M) or Lawyer (M).
    • "E is not male, neither also a wife of a professional."
      • "E is not male" means E is female. The two females are Grandmother and Teacher.
      • "neither also a wife of a professional": This is the crucial part. The "Teacher" is explicitly described as "the wife of a lawyer who was the son of a doctor." This phrase "wife of a professional" most likely refers specifically to the Teacher in this context. If E is not the Teacher, then E must be the other female, the Grandmother.
      • So, E = Grandmother (F).
  5. Complete the mapping:

    • We have: C (Child, M), E (Grandmother, F).
    • Remaining members: A, B, D.
    • Remaining roles: Doctor (M), Lawyer (M), Teacher (F).
    • "D is the eldest": Since E is Grandmother, D must be the Doctor (M) to be the eldest male and E's spouse.
    • "B is a male": B must be the Lawyer (M).
    • "A" is the last member: A must be the Teacher (F).
  6. Verify the complete family structure:

    • D (Doctor, M) is married to E (Grandmother, F).
    • B (Lawyer, M) is their son, married to A (Teacher, F).
    • C (Child, M) is the son of B and A.
    • All conditions (2 fathers, 2 sons, 2 wives, 3 males, 2 females, professions, ages, genders) are met.
  7. Answer the question:

    • How is D related to E?
    • D is the Doctor (M), and E is the Grandmother (F). They are married.
    • Therefore, D is the Husband of E.

The final answer is A) Husband.

Logical Reasoning: Read the following passage and answer that follow: A, B, C, D and E are members of the same family. There are two father

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