2012 CSAT, all questions
UPSC Prelims 2012 · CSAT
Question 26: Logical Reasoning and Mental Ability
Given that,
- 1.A is the brother of B.
- 2.C is the father of A.
- 3.D is the brother of E.
- 4.E is the daughter of B.
Then, the uncle of D is
aA
bB
cC
dE
AnswerUPSC’s answer is (a).
E is B's daughter and D is E's brother, so D is also B's child. A is B's brother, which makes A the brother of D's parent, that is, D's uncle. C is A's father, so he is a generation above, and E is D's sister. Remember: an uncle is a parent's brother, and the relationship holds whether B is D's father or mother.
Why each option is right or wrong
- (a) Right. A is the brother of B, who is D's parent, so A is D's uncle.
- (b) Wrong. B is D's parent, not D's uncle.
- (c) Wrong. C is in the generation above, as A's father.
- (d) Wrong. E is D's sister.
Answer: UPSC’s key. Explanation: written by UPSC Grade, not by UPSC.
Source: UPSC, Civil Services (Preliminary) Examination 2012, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.