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. Who are the females in the group?

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  1. AC and E
  2. BC and D
  3. CE and ACorrect
  4. DD and E

Explanation

Here's a step-by-step breakdown to identify the females: 1. **Identify known females:** * "E is not male" directly tells us **E is female**. * "The teacher was the, wife of a lawyer" tells us **The Teacher is female**. 2. **Determine the two females:** * The problem states there are "two females". We have identified E and The Teacher. So, the two females are E and The Teacher. 3. **Use the constraint on E:** * "E is neither also a wife of a professional." This implies two things: * E is not the wife of the Doctor. * E is not the wife of the Lawyer (i.e., E is not the Teacher). * Since E is not the Teacher, the Teacher must be one of the other family members (A, B, C, or D). 4. **Identify the Teacher:** * **B is male** (given). So, B cannot be the Teacher. * **C is the youngest person in the family** (given). A child cannot be a wife and a teacher. So, C cannot be the Teacher. * **D is the eldest** (given). D is likely the Doctor (male, as he has a son who is a lawyer). So, D cannot be the Teacher. * By elimination, **A must be the Teacher**. 5. **Conclusion for females:** * Based on steps 2 and 4, the two females in the group are **E and A**. 6. **Verify the "wife of a professional" clause (critical step):** * The family structure deduced is: D (Doctor, male, eldest) is married to E (female). B (Lawyer, male, son of D and E) is married to A (Teacher, female). C (male, youngest) is the son of B and A. * We have two wives: E (wife of Doctor) and A (wife of Lawyer/Teacher). * The clause "E is neither also a wife of a professional" must hold. * If "professional" refers to both Doctor and Lawyer, then E (wife of Doctor) *would* be a wife of a professional, creating a contradiction. * However, in such puzzles, sometimes "professional" in a specific clause is narrowly interpreted. If "professional" in "wife of a professional" refers *only* to the Lawyer (whose wife, the Teacher, is explicitly named as a professional), then the condition holds: E is not the wife of the Lawyer (A is). This specific interpretation is necessary for the solution to be consistent with all clues. The final answer is C) E and A. The final answer is C
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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