1. Pointing to a photograph Anjali said, "He is the son of the only son of my grandfather." How is the man in the photograph related to Anjali?
a) Brother
b) Uncle
c) Son
d) Data is inadequate
Explanation: The man in the photograph is son of Anjali's grandfather's son i.e., the son of Anjali's father. Hence, the boy is the brother of Anjali.
2. Pointing to a person, Deepak said, "His only brother is the father of my daughter's father". How is the person related to Deepak?
a) Father
b) Grandfather
c) Uncle
d) Brother-in-law
Explanation: Father of Deepak's daughter's father → Deepak's father.
Hence, the person in the brother of Deepak's father.
Therefore, the person is the uncle of Deepak.
3. 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
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.
4. 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
Explanation: As the sex of Q is not known, hence, data is inadequate.
5. 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
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.
6. Pointing to a photograph of a boy Suresh said, "He is the son of the only son of my mother." How is Suresh related to that boy?
a) Brother
b) Uncle
c) Cousin
d) Father
Explanation: The boy in the photograph is the only son of the son of Suresh's mother i.e., the son of Suresh. Hence, Suresh is the father of boy.
7. If A + B means A is the mother of B; A - B means A is the brother 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 shows that P is the maternal uncle of Q?
a) Q - N + M x P
b) P + S x N - Q
c) P - M + N x Q
d) Q - S % P
Explanation: P - M → P is the brother of M
M + N → M is the mother of N
N x Q → N is the sister of Q
Therefore, P is the maternal uncle of Q.
8. 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
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.
9. If A + B means A is the brother of B; A - B means A is the sister of B and A x B means A is the father of B. Which of the following means that C is the son of M?
a) M - N x C + F
b) F - C + N x M
c) N + M - F x C
d) M x N - C + F
Explanation: M x N → M is the father of N
N - C → N is the sister of C
and C + F → C is the brother of F.
Hence, M is the father of C or C is the son of M.
10. Introducing a boy, a girl said, "He is the son of the daughter of the father of my uncle." How is the boy related to the girl?
a) Brother
b) Nephew
c) Uncle
d) Son-in-law
Explanation: The father of the boy's uncle → the grandfather of the boy and daughter of the grandfather → sister of father.