Reasoning Quiz No.107 Choose the word which is different from the rest.

Question: A $ B means A is the father of B; A # B means A is the sister of B; A * B means A is the daughter of B and A @ B means A is the brother of B. Which of the following indicates that M is the wife of Q?
[A].

Q $ R # T @ M

[B].

Q $ R @ T # M

[C].

Q $ R * T # M

[D].

Q $ R @ T * M

Answer: Option D

Explanation:

Q $ R → Q is the father of R

R @ T → R is the brother of T

Hence, → Q is the father of T

T * M → T is the daughter of M

Hence, → M is the mother of T

Hence, M is the wife of Q.

Question: 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: Option 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.