Blood Relation Test

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: P is the mother of K; K is the sister of D; D is the father of J. How is P related to J?
[A].

Mother

[B].

Grandmother

[C].

Aunt

[D].

Data inadequate

Answer: Option B

Explanation:

P is the mother of K

K is the sister of D

D is the father of J.

Therefore, J is the nephew or niece of K and P is the grandmother of J.

Question: Introducing a woman, Shashank said, “She is the mother of the only daughter of my son.” How that woman is related to Shashank?
[A].

Daughter

[B].

Sister-in-law

[C].

Wife

[D].

Daughter-in-law

Answer: Option D

Explanation:

The woman is the mother of Shashank’s granddaughter. Hence, the woman is the daughter-in-law of Shashank.

Question: If A $ B means A is the brother of B; B * C means B is the son of C; C @ D means C is the wife of D and A # D means A is the son of D, how C is related to A?
[A].

Maternal grandmother

[B].

Maternal aunt

[C].

Aunt

[D].

Mother

Answer: Option D

Explanation:

A $ B → A is the brother of B

B * C → B is the son of C

Hence, → A is the son of C

C @ D → C is the wife of D

Hence, → C is the mother of A.

Question: M is the father of N who is the son of V. In order to know the relation of M to P, which of the statement/statements is/are necessary?

[A].

Only (1)

[B].

Only (2)

[C].

Either (1) or (2)

[D].

(1) and (2) both

Answer: Option A

Explanation:

M is the father of N and N is the son of V.

Hence, V is the mother of N.

From (1), P is the brother of V

Therefore, M is the brother-in-law of P because V is the wife of M.

From (2), the daughter of N, is the granddaughter of V. From this we do not get any relation of M to P.

Question: If A + B means B is the brother of A; A x B means B is the husband of A; A – B means A is the mother of B and A % B means A is the father of B, which of the following relations shows that Q is the grandmother of T?
[A].

Q – P + R % T

[B].

P x Q % R – T

[C].

P x Q % R + T

[D].

P + Q % R – T

Answer: Option A

Explanation:

Q – P → Q is the mother of P

P + R → R is the brother of P

Hence, → q is the mother of R

R % T → R is the father of T.

Hence, Q is the grandmother of T.

Question: If P + Q means P is the brother of Q; P x Q means P is the father of Q and P – Q means P is the sister of Q, which of the following relations shows that I is the niece of K?
[A].

K + Y + Z – I

[B].

K + Y x I – Z

[C].

Z – I x Y + K

[D].

K x Y + I – Z

Answer: Option B

Explanation:

K + Y → K is the brother of Y

Y x I → Y is the father of I

Hence, → K is the uncle of I

and I – Z → I is the sister of Z

Hence, → I is the niece of K.

Question: If P $ Q means P is the father of Q; P # Q means P is the mother of Q and P * Q means P is the sister of Q, then N # L $ P * Q shows which of the relation of Q to N?
[A].

Grand son

[B].

Grand daughter

[C].

Nephew

[D].

Data is inadequate

Answer: Option D

Explanation:

As the sex of Q is not known, hence, data is inadequate.

Question: If A is the brother of B; B is the sister of C; and C is the father of D, how D is related to A?
[A].

Brother

[B].

Sister

[C].

Nephew

[D].

Cannot be determined

Answer: Option D

Explanation:

If D is Male, the answer is Nephew.

If D is Female, the answer is Niece.

As the sex of D is not known, hence, the relation between D and A cannot be determined.

Note: Niece – A daughter of one’s brother or sister, or of one’s brother-in-law or sister-in-law. Nephew – A son of one’s brother or sister, or of one’s brother-in-law or sister-in-law.

Question: If A $ B means A is the brother of B; A @ B means A is the wife of B; A # B means A is the daughter of B and A * B means A is the father of B, which of the following indicates that U is the father-in-law of P?
[A].

P @ Q $ T # U * W

[B].

P @ W $ Q * T # U

[C].

P @ Q $ W * T # U

[D].

P @ Q $ T # W * U

Answer: Option A

Explanation:

P @ Q → P is the wife of Q …(1)

Q $ T → Q is the brother of T …(2)

T # U → T is the daughter of U

Hence, → Q is the son of U …(3)

U * W → U is the father of W.

From (1) and (3), U is the father-in-law of P.