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?
C is the brother of A and the son of E.
F is the mother b.
Only (1)
Only (2)
Either (1) or (2)
(1) and (2) both
Explanation:
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.
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.