Pariksha SaathiReasoning
Blood Relations: Practice Questions with Answers
89 practice questions on Blood Relations, with answers; most also have an explanation or a worked solution. Try each one before you open its answer.
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Q.51
X introduces Y as the daughter of his only brother's wife. How is Y related to X?
- A Niece
- B Daughter
- C Sister
- D Cousin
Show answer
Correct answer: (A) Niece
X's only brother's wife is X's sister-in-law. Y, being her daughter, is the daughter of X's brother — making Y X's niece.
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Q.52
P is Q's son. Q is R's daughter. How is R related to P?
- A Grandfather or grandmother
- B Father
- C Uncle
- D Brother
Show answer
Correct answer: (A) Grandfather or grandmother
Q is R's daughter, and P is Q's son — so R is the parent of P's mother, making R P's maternal grandparent (R's own gender isn't specified here).
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Q.53
A is B's mother's father. C is B's father. How is C related to A?
- A Son-in-law
- B Son
- C Brother-in-law
- D Grandson
Show answer
Correct answer: (A) Son-in-law
A is B's maternal grandfather; C, B's father, is married to A's daughter (B's mother), so C is A's son-in-law.
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Q.54
K is L's father. M is L's wife. N is M's brother. How is N related to L?
- A Brother-in-law
- B Brother
- C Cousin
- D Father-in-law
Show answer
Correct answer: (A) Brother-in-law
M is L's wife, and N is M's brother — the brother of one's wife is one's brother-in-law.
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Q.55
A is B's father. C is A's father. D is C's father. How is D related to B?
- A Great-grandfather
- B Grandfather
- C Father
- D Uncle
Show answer
Correct answer: (A) Great-grandfather
D is C's father, C is A's father, and A is B's father — tracing three generations up from B reaches D, making D B's great-grandfather.
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Q.56
A is B's husband's sister. C is B's daughter. How is A related to C?
- A Aunt
- B Mother
- C Cousin
- D Sister
Show answer
Correct answer: (A) Aunt
A is B's husband's sister, making her the (paternal) aunt of B's children, including C.
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Q.57
Introducing a girl, a boy says, "Her mother is my mother's only daughter." If the boy has only one sister, how is the girl related to the boy?
- A Niece
- B Sister
- C Daughter
- D Cousin
Show answer
Correct answer: (A) Niece
"My mother's only daughter" is the boy's only sister (since the boy himself is male). So the girl's mother is the boy's sister, making the girl the boy's niece.
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Q.58
D is E's son. E is F's son. G is F's only daughter. How is G related to D?
- A Aunt
- B Mother
- C Sister
- D Grandmother
Show answer
Correct answer: (A) Aunt
E and G are both F's children (E the son, G the only daughter), making them siblings. Since D is E's son, G — E's sister — is D's aunt.
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Q.59
A is B's son. C is A's wife. If B is a woman, how is B related to C?
- A Mother-in-law
- B Mother
- C Grandmother
- D Aunt
Show answer
Correct answer: (A) Mother-in-law
A is C's husband (A married C); since B is A's mother and is a woman, B is C's mother-in-law.
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Q.60
A is B's mother. C is B's son. How is C related to A?
- A Grandson
- B Son
- C Nephew
- D Brother
Show answer
Correct answer: (A) Grandson
A is B's mother, and C is B's son — so C is the child of A's child, making C A's grandson.
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Q.61
P is Q's son. Q is R's wife. R is S's father. S is Q's only daughter. How is P related to S?
- A Brother
- B Father
- C Cousin
- D Uncle
Show answer
Correct answer: (A) Brother
P (Q's son) and S (Q's only daughter) share the same mother, Q, making P and S brother and sister.
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Q.62
A is the brother of B. B is the mother of C. How is A related to C?
- A Maternal uncle
- B Father
- C Grandfather
- D Brother
Show answer
Correct answer: (A) Maternal uncle
A is B's brother, and B is C's mother — so A is the brother of C's mother, making A C's maternal uncle.
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Q.63
A's son is married to B. B's brother is C. How is C related to A's son?
- A Brother-in-law
- B Brother
- C Uncle
- D Nephew
Show answer
Correct answer: (A) Brother-in-law
B is the wife of A's son; C, B's brother, is therefore the brother-in-law of A's son.
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Q.64
In a family, P is the brother of Q. R is the mother of P. S is R's husband. How is S related to Q?
- A Father
- B Uncle
- C Grandfather
- D Brother
Show answer
Correct answer: (A) Father
R is P's mother, and since P and Q are siblings, R is also Q's mother. S, R's husband, is therefore Q's father.
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Q.65
Pointing to a man, a woman says, "His mother is the only daughter of my mother." How is the man related to the woman?
- A Son
- B Brother
- C Nephew
- D Grandson
Show answer
Correct answer: (A) Son
"My mother's only daughter" must be the woman herself, since she is necessarily one of her own mother's daughters. So the man's mother is the woman — making the man her son.
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Q.66
Pointing to a man, Kavita says, "His son is my brother's son." How is the man related to Kavita?
- A Brother
- B Father
- C Uncle
- D Cousin
Show answer
Correct answer: (A) Brother
"My brother's son" is Kavita's nephew; the man is that nephew's father, who is Kavita's own brother.
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Q.67
P is Q's father. R is Q's brother. S is R's wife. How is S related to P?
- A Daughter-in-law
- B Daughter
- C Niece
- D Sister
Show answer
Correct answer: (A) Daughter-in-law
R is Q's brother, so R is also P's son. S, being R's wife, is therefore P's daughter-in-law.
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Q.68
A is the daughter of B. C is the son of A. D is B's husband. How is D related to C?
- A Maternal grandfather
- B Father
- C Uncle
- D Brother
Show answer
Correct answer: (A) Maternal grandfather
D is B's husband, and A is B's daughter — so D is A's father. Since C is A's son, D is C's grandfather on his mother's side, i.e. C's maternal grandfather.
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Q.69
A is the brother of B. C is the sister of A. How is C related to B?
- A Sister
- B Brother
- C Mother
- D Cannot be determined
Show answer
Correct answer: (A) Sister
C and A share the same siblings (A is B's brother), so C is also a sibling of B. Since C is female, C is B's sister.
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Q.70
A's father and B's father are brothers. How is A related to B?
- A Cousin
- B Brother
- C Nephew
- D Uncle
Show answer
Correct answer: (A) Cousin
A's father and B's father being brothers means A and B share a grandfather through their fathers' side, making them cousins.
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Q.71
A's mother is B. B's only sister is C. C is married to D. How is D related to A?
- A Uncle
- B Father
- C Grandfather
- D Cousin
Show answer
Correct answer: (A) Uncle
C is A's maternal aunt (mother's sister), and D is her husband — the husband of one's aunt is referred to as uncle.
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Q.72
A tells B, "Your mother's husband's sister is my mother." How is A related to B?
- A Cousin
- B Sister
- C Aunt
- D Mother
Show answer
Correct answer: (A) Cousin
"Your mother's husband" is B's father. His sister is B's paternal aunt. Since that aunt is A's mother, A and B are cousins.
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Q.73
Pointing to a man, Priya says, "He is the husband of my mother's only daughter." If Priya has no sisters, how is the man related to Priya?
- A Husband
- B Brother
- C Father
- D Brother-in-law
Show answer
Correct answer: (A) Husband
My mother's only daughter (since I have no sisters) is Priya herself; so the man, her mother's only daughter's husband, is Priya's husband.
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Q.74
Pointing to a photograph, a man says, "She is the daughter of my father's only son." If the man has no brothers, how is the woman in the photograph related to him?
- A Daughter
- B Sister
- C Niece
- D Wife
Show answer
Correct answer: (A) Daughter
Since the man has no brothers, he himself is his father's only son, so "she" is his own daughter.
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Q.75
Pointing to a photograph, Raj says, "Her father is my father's only son." If Raj has no brothers, how is the girl in the photograph related to Raj?
- A Daughter
- B Sister
- C Niece
- D Wife
Show answer
Correct answer: (A) Daughter
"My father's only son" (with no brothers) is Raj himself, so the girl's father is Raj, making her Raj's daughter.
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Q.76
X is Y's sister. Z is Y's son. How is X related to Z?
- A Aunt
- B Mother
- C Grandmother
- D Cousin
Show answer
Correct answer: (A) Aunt
X is Z's parent's (Y's) sister, so X is Z's aunt regardless of whether Y is Z's mother or father.
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Q.77
A is B's son. B is the sister of C. How is C related to A?
- A Maternal uncle or aunt
- B Grandmother
- C Father
- D Cousin
Show answer
Correct answer: (A) Maternal uncle or aunt
B is A's mother (since A is her son), and C is B's sibling — so C is A's mother's brother or sister, i.e. A's maternal uncle or aunt (C's gender isn't specified).
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Q.78
A is B's father-in-law. C is B's son. How is A related to C?
- A Grandfather
- B Father
- C Uncle
- D Brother
Show answer
Correct answer: (A) Grandfather
A is the father of B's spouse. Since C is B's son, A is C's grandfather (on the side of B's spouse).
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Q.79
A's brother B is married to C. D is C's son. How is D related to A?
- A Nephew
- B Son
- C Brother
- D Grandson
Show answer
Correct answer: (A) Nephew
B is married to C, so C's son D is also B's son. Since B is A's brother, D is A's nephew.
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Q.80
Pointing to a girl, Vikram says, "She is the only daughter of my father's wife." If Vikram has no stepmother, how is the girl related to Vikram?
- A Sister
- B Daughter
- C Mother
- D Cousin
Show answer
Correct answer: (A) Sister
"My father's wife" (with no stepmother) is Vikram's own mother; her only daughter is Vikram's sister.
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Q.81
P is Q's daughter. R is Q's husband. S is R's mother. How is S related to P?
- A Grandmother
- B Mother
- C Aunt
- D Sister
Show answer
Correct answer: (A) Grandmother
R is Q's husband and P's father. S, being R's mother, is therefore P's (paternal) grandmother.
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Q.82
Introducing a man, a woman says, "His father is the only son of my father's father." If the woman's father has no brothers, how is the man related to the woman?
- A Brother
- B Father
- C Uncle
- D Cousin
Show answer
Correct answer: (A) Brother
My father's father's only son (with no other brothers) is my own father; so 'his father' refers to the woman's father too, making the man and the woman siblings - he is her brother.
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Q.83
Meena introduces Rahul as the son of the only brother of her father. How is Rahul related to Meena?
- A Cousin
- B Brother
- C Nephew
- D Son
Show answer
Correct answer: (A) Cousin
"The only brother of her father" is Meena's paternal uncle. Rahul, being that uncle's son, is Meena's cousin.
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Q.84
A is married to B. B's father is C. C's wife is D. How is D related to A?
- A Mother-in-law
- B Mother
- C Sister
- D Aunt
Show answer
Correct answer: (A) Mother-in-law
C is B's father, and D is C's wife, making D B's mother. Since A is married to B, D is A's mother-in-law.
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Q.85
A's father is the only son of B. C is B's daughter. How is C related to A?
- A Aunt
- B Mother
- C Sister
- D Grandmother
Show answer
Correct answer: (A) Aunt
B's children are A's father (B's only son) and C (B's daughter) — so C is A's father's sister, making C A's aunt (paternal).
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Q.86
Rohan said, "This girl is the wife of the only son of my grandfather." How is the girl related to Rohan?
- A Mother
- B Sister
- C Wife
- D Daughter
Show answer
Correct answer: (A) Mother
Rohan is his grandfather's GRANDSON, not his grandfather's son, so "my grandfather's only son" cannot refer to Rohan himself — it unambiguously refers to the generation between them, i.e. Rohan's father. The girl, being that son's wife, is Rohan's mother.
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Q.87
A is B's father's mother. C is B's sister. How is A related to C?
- A Grandmother
- B Mother
- C Aunt
- D Grandfather
Show answer
Correct answer: (A) Grandmother
A is B's father's mother, i.e. B's paternal grandmother; since C is B's sister, A is also C's grandmother.
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Q.88
Introducing a man, a woman said, "His wife is the only daughter of my father." How is the man related to the woman?
- A Husband
- B Brother
- C Father
- D Son
Show answer
Correct answer: (A) Husband
The only daughter of the woman's father must be the woman herself, so "his wife" = the woman, making the man her husband.
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Q.89
A is B's sister. B is the son of C. D is C's husband. How is D related to A?
- A Father
- B Uncle
- C Brother
- D Grandfather
Show answer
Correct answer: (A) Father
B is A's brother, so A is also C's child. D, being C's husband, is therefore A's father.
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How these questions were made
Authored by an AI assistant (Claude) - not reviewed by a subject-matter expert.