16.

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?
1.C is the brother of A and the son of E.
2.F is the mother B.

A. Only (1) B. Only (2)
C. Either (1) or (2) D. (1) and (2) both
Answer and Explanation
Answer:B
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.
17.

Pointing towards a man, a woman said, "His mother is the only daughter of my mother." How is the woman related to the man?

A. Mother B. Grandmother
C. Sister D. Daughter
Answer and Explanation
Answer:A
Explanation: Only daughter of my mother → myself. Hence, the woman is the mother of the man.
18.

If P $ Q means P is the brother of Q; P # Q means P is the mother of Q; P * Q means P is the daughter of Q in A # B $ C * D, who is the father?

A. D B. B
C. C D. Data is inadequate
Answer and Explanation
Answer:A
Explanation: A is the mother of B, B is the brother of C and C is the daughter of D. Hence, D is the father.
19.

Introducing Sonia, Aamir says, "She is the wife of only nephew of only brother of my mother." How Sonia is related to Aamir?

A. Wife B. Sister
C. Sister-in-law D. Data is inadequate
Answer and Explanation
Answer:A
Explanation: Brother of mother means maternal uncle. Hence only nephew of Aamir's maternal uncle means Aamir himself. Therefore Sonia is the wife of Aamir.
20.

If A + B means A is the brother of B; A % B means A is the father of B and A x B means A is the sister of B. Which of the following means M is the uncle of P?

A. M % N x P B. N x P % M
C. M + S % R % P D. M + K % T x P
Answer and Explanation
Answer:D
Explanation: M + K → M is the brother of K K % T → K is the father of T T x P → T is the sister of P Therefore, K is the father of P and M is the uncle of P.