Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and
a: if the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question.
b: if the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.
c: if the data either in statement I alone or in statement II alone are sufficient to answer the question.
d: if the data even in both statements I and II together are not sufficient to answer the question.
e: if the data in both statements I and II together are necessary to answer the question.
Is A brother of B ?
I. D is mother of B and B is son of C. C is father of A.
II. B is sister of A and F is brother of A.
I : D is mother of B and B is son of C. C is father of A.
=> D is wife of C and their children are B(male) and A.
Since, gender of A in unknown, hence A can be either brother or sister of B. Thus, I alone is insufficient.
II : B is sister of A and F is brother of A.
=> B(female), F(male) and A are siblings.
Since, gender of A in unknown, hence A can be either brother or sister of B. Thus, II alone is insufficient.
Now, even after combining both statements, we cannot determine whether A is brother of B or not.
$$\therefore$$ Both statements even together are insufficient.
=> Ans - (D)
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