UPSC Prelims 2012·CSAT·Logical Reasoning·Blood Relations

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

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  1. AACorrect
  2. BB
  3. CC
  4. DE

Explanation

To find the uncle of D, let us look at the relationships step by step:

  1. From statement 4, E is the daughter of B.
  2. From statement 3, D is the brother of E. This means D and E are siblings, and B is the parent of both D and E.
  3. From statement 1, A is the brother of B.

Since B is the parent of D, and A is the brother of B, A is the brother of D's parent. By definition, the brother of one's parent is an uncle. Therefore, A is the uncle of D.

The correct option is A.

Logical Reasoning: 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

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