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A and B are children of D. Who is the father of A? To answer this question which of the statements (1) and (2) is necessary?

  • A.Only (1)
  • B.Only (2)
  • C.Either (1) or (2)
  • D.(1) and (2) both

Answer: B

A and B are children of D.

From (1), C is the brother B and son of E.

Since, the sex of D and E are not known. Hence (1) is not sufficient to answer the question.

From (2). F is the mother of B. Hence, F is also the mother of A. Hence D is the father of A.

Thus, (2) is sufficient to answer the question.

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