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In Relation puzzle type, mutual blood relations or other information of more than two persons are mentioned and information about any two is mentioned.

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

Option:
A. Father
B. Brother
C. Grandfather
D. Uncle
E. None of these
Answer: D . Uncle

Justification:

Clearly, B is the brother of A; A's son is D's brother. This means D is the daughter of A.
Since C and D are sister, C is also the daughter of A.
So, B is the uncle of C.
Hence, the answer is (d).

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