Blood Relation Questions and Answers

Q: 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?

Correct answer: Data is inadequateN # L makes N the mother of L; L $ P makes L the father of P; P * Q makes P the sister of Q, so Q is also L’s child and N’s grandchild. But nothing says whether Q is a boy or a girl, so we cannot choose between grandson and granddaughter - the data are inadequate.

Q: Suraj told Anand, 'Yesterday I defeated the only brother of the daughter of my grandmother.' Whom did Suraj defeat ?

Correct answer: FatherThe daughter of my grandmother is Suraj’s mother, and her only brother is Suraj’s maternal uncle - but the choices offer no uncle. Read the other way, the grandmother’s daughter is Suraj’s aunt, and her only brother is then Suraj’s own father, which is the relation the question is after.

Q: If X + Y means X is the daughter of Y; X - Y means X is the brother of Y; X % Y means X is the father of Y and X x Y means X is the sister of Y. Which of the following means I is the niece of J?

Correct answer: I x C + N - JI × C makes I the sister of C; C + N makes C the daughter of N, so I too is N’s daughter; and N – J makes N the brother of J. A brother’s daughter is a niece, so I is the niece of J.

Q: Pointing to a girl in the photograph, Amar said, "Her mother`s brother is the only son of my mother's father." How is the girl`s mother related to Amar ?

Correct answer: AuntMy mother’s father is Amar’s maternal grandfather, and that man’s only son is Amar’s maternal uncle. The girl’s mother is that uncle’s sister - so she and Amar’s mother are sisters, which makes the girl’s mother Amar’s aunt.

Q: Pointing to a man in a photograph, a woman said, "His brother's father is the only son of my grandfather." How is the woman related to the man in the photograph ?

Correct answer: SisterHis brother’s father is the man’s own father, and the only son of my grandfather is the woman’s own father. The two therefore share a father, which makes the woman his sister.

Q: Introducing a man, a woman said, "His wife is the only daughter of my father." How is that man related to the woman ?

Correct answer: HusbandThe only daughter of my father can only be the woman herself. The man’s wife is therefore the woman, which makes him her husband.

Q: 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?

Correct answer: P - M + N x QRead the chain left to right. P – M makes P the brother of M; M + N makes M the mother of N; N × Q makes N the sister of Q. So M is the mother of both N and Q, and P is M’s brother - that is, the brother of Q’s mother, which is exactly what maternal uncle means.

Q: A man pointing to a photograph says, "The lady in the photograph is my nephew's maternal grandmother." How is the lady in the photograph related to the man's sister who has no other sister ?

Correct answer: MotherThe man’s nephew is his sister’s son, so that boy’s maternal grandmother is the mother of the man’s sister - which is the man’s own mother. The lady is therefore the sister’s mother.

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181.

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: D

Correct answer: Data is inadequate

N # L makes N the mother of L; L $ P makes L the father of P; P * Q makes P the sister of Q, so Q is also L’s child and N’s grandchild. But nothing says whether Q is a boy or a girl, so we cannot choose between grandson and granddaughter - the data are inadequate.

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182.

In a family of six persons A, B, C, D, E and F, there are two married couples.
(ii) D is grandmother of A and mother of B.
(iii) C is wife of B and mother of F.
(iv) F is the grand daughter of E.

Who among the following is one of the couples ?

A.cd
B.de
C.Eb
D. Cannot be determined

Answer: B

C is wife of B. So, one couple is BC.
Now, D is grandmother of A. B is the son of D and his wife C is the mother of F.
So, D is also the grandmother of F. But F is the grand daughter of E.
So, E is the grandfather of F and the husband of D.
Thus, DE is another couple.

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183.

Suraj told Anand, 'Yesterday I defeated the only brother of the daughter of my grandmother.' Whom did Suraj defeat ?

A.Son
B.Father
C.Brother
D.Father-in-law
E.Cousin

Answer: B

Correct answer: Father

The daughter of my grandmother is Suraj’s mother, and her only brother is Suraj’s maternal uncle - but the choices offer no uncle. Read the other way, the grandmother’s daughter is Suraj’s aunt, and her only brother is then Suraj’s own father, which is the relation the question is after.

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184.

If X + Y means X is the daughter of Y; X - Y means X is the brother of Y; X % Y means X is the father of Y and X x Y means X is the sister of Y. Which of the following means I is the niece of J?

A.J - N % C x I
B.I x C - N % J
C.J + M x C % I
D.I x C + N - J

Answer: D

Correct answer: I x C + N - J

I × C makes I the sister of C; C + N makes C the daughter of N, so I too is N’s daughter; and N – J makes N the brother of J. A brother’s daughter is a niece, so I is the niece of J.

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185.

Pointing to a girl in the photograph, Amar said, "Her mother`s brother is the only son of my mother's father." How is the girl`s mother related to Amar ?

A.Mother
B.Sister
C.Aunt
D.Grandmother

Answer: C

Correct answer: Aunt

My mother’s father is Amar’s maternal grandfather, and that man’s only son is Amar’s maternal uncle. The girl’s mother is that uncle’s sister - so she and Amar’s mother are sisters, which makes the girl’s mother Amar’s aunt.

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186.

Pointing to a man in a photograph, a woman said, "His brother's father is the only son of my grandfather." How is the woman related to the man in the photograph ?

A.Mother
B.Aunt
C.Sister
D.Daughter

Answer: C

Correct answer: Sister

His brother’s father is the man’s own father, and the only son of my grandfather is the woman’s own father. The two therefore share a father, which makes the woman his sister.

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187.

Introducing a man, a woman said, "His wife is the only daughter of my father." How is that man related to the woman ?

A.Brother
B.Father-in-law
C.Maternal Uncle
D.Husband
E.None of these

Answer: D

Correct answer: Husband

The only daughter of my father can only be the woman herself. The man’s wife is therefore the woman, which makes him her husband.

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188.

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

Answer: C

Correct answer: P - M + N x Q

Read the chain left to right. P – M makes P the brother of M; M + N makes M the mother of N; N × Q makes N the sister of Q. So M is the mother of both N and Q, and P is M’s brother - that is, the brother of Q’s mother, which is exactly what maternal uncle means.

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189.

When Anuj saw Manish, he recalled, "He is the son of the father of my daughter." Who is Manish ?

A.Brother in law
B.Brother
C.Cousin
D.Uncle

Answer: A

Anuj's daughter's mother - Anuj's wife ;

Anju's wife's father - Anuj's father-in-law;

Father-in-law's son - Anuj's brother-in-law

So, Manish is Anuj's brother-in-law

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190.

A man pointing to a photograph says, "The lady in the photograph is my nephew's maternal grandmother." How is the lady in the photograph related to the man's sister who has no other sister ?

A.Cousin
B.Sister-in-Law
C.Mother
D.Mother-in-law

Answer: C

Correct answer: Mother

The man’s nephew is his sister’s son, so that boy’s maternal grandmother is the mother of the man’s sister - which is the man’s own mother. The lady is therefore the sister’s mother.

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