Question:

A and B are brothers. C and D are sisters. A's son is D's brother. How is B related to C?

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If someone is the sibling of a parent, they are the \textbf{uncle/aunt} of the child.
Updated On: May 6, 2026
  • Father
  • Brother
  • Grandfather
  • Uncle
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The Correct Option is D

Solution and Explanation


Concept: This problem is based on step-by-step deduction of family relationships. Step 1:Understand the relation between A and B.
  • A and B are brothers → both are male siblings

Step 2:Understand the relation between C and D.
  • C and D are sisters → both are female siblings

Step 3:Use the key relation given.
  • A’s son is D’s brother
  • This means A’s son and D share the same parent
  • Hence, A is the father of D

Step 4:Extend the relationship to C.
  • Since C and D are sisters
  • A is also the father of C

Step 5:Find relation of B to C.
  • B is the brother of A
  • Therefore, B is the paternal uncle of C

Final Answer: Uncle
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