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How is A related to D ?

Statements:

1. B is the brother of A.

2. B is D's son.

  • A.1 alone is sufficient while 2 alone is not sufficient
  • B.2 alone is sufficient while 1 alone is not sufficient
  • C.Either 1 or 2 is sufficient
  • D.Neither 1 nor 2 is sufficient

Answer: D

Correct answer: Neither 1 nor 2 is sufficient

Statement 1 makes A and B siblings and statement 2 makes B a son of D, so together A is a child of D. But nothing gives A’s sex, so it cannot be said whether A is D’s son or daughter, and the relationship asked for remains undetermined.

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