If D is the brother of B, how is B related to C? To answer this question,…
2025
If D is the brother of B, how is B related to C?
To answer this question, which statement(s) are necessary?
I. The son of D is the grandson of C.
II. B is the sister of D.
- A.
Only statement I is necessary
- B.
Only statement II is necessary
- C.
Either statement I or statement II is necessary
- D.
Both statements I and II are necessary
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Show answer & explanation
Correct answer: D
Correct answer: Both statements I and II are necessary
Given: D is the brother of B, so D and B are siblings.
Statement I: The son of D is the grandson of C. Under the standard blood-relation interpretation, this links D as a child of C; because B is D's sibling, B is also a child of C.
Statement II: B is the sister of D. This gives B's gender, so B is female.
Together: B is the female child of C, so B is C's daughter.
Statement I alone does not give B's gender, and statement II alone does not connect B to C. Hence both are needed.