Practice Questions
Concept Explanation
Blood-relation questions describe family links in words. You translate each phrase (mother's only daughter, grandfather's only son, etc.) into a person on a small tree, then read how two people are related.
Phrases that appear often
- Only daughter / only son: fixes a single person in that role (sister, father, self).
- Pointing at a photo: “His mother …” refers to the person in the picture, not the speaker.
- Chain codes: A is B's sister, B is C's mother → A is C's aunt.
- Parent labels: mother's brother = maternal uncle; father's brother = paternal uncle.
How to solve fast
- Draw a tiny tree: one generation per row (grandparents → parents → children).
- Replace each clause with one person before moving to the next clause.
- Mark gender from names or pronouns when the relation depends on it (aunt vs uncle).
- Re-read “only” and “my” — they often mean the speaker or a unique sibling.
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Q1 EasyPointing to a man in a photograph, Asha said, "His mother's only daughter is my mother." How is Asha related to the man?ExplanationThe man's mother's only daughter is the man's sister, and she is Asha's mother. Asha is the man's niece.
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Q2 EasyIntroducing a man, a woman said, "His mother is the only daughter of my father." How is the woman related to the man?ExplanationThe only daughter of her father is the woman herself, so she is the man's mother.
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Q3 EasyPointing to a boy, Ramesh said, "He is the son of my grandfather's only son." How is the boy related to Ramesh?ExplanationGrandfather's only son is Ramesh's father. The boy is Ramesh's brother.
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Q4 EasyA is the sister of B. C is the husband of B. D is the son of C. How is A related to D?ExplanationD is B's son and A is B's sister, so A is D's aunt.
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Q5 EasyRamesh said about a girl, "She is the daughter of my grandfather's only son." How is the girl related to Ramesh?ExplanationGrandfather's only son is Ramesh's father. The girl is Ramesh's sister.
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Q6 EasyP is the father of Q. R is the mother of Q. How is P related to R?ExplanationP and R are Q's parents, so P is R's husband.
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Q7 EasyNeelam is Rohan's sister. Geeta is Neelam's mother. How is Rohan related to Geeta?ExplanationNeelam and Rohan are siblings, so Rohan is Geeta's son.
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Q8 EasyPointing to a lady, Arun said, "She is the wife of my father." How is the lady related to Arun?ExplanationFather's wife is Arun's mother.
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Q9 EasyAnil is the son of Sunil's father. How is Anil related to Sunil?ExplanationSunil's father's son is Sunil or his brother. Anil is Sunil's brother.
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Q10 EasyPointing to a man, Rekha said, "He is the only son of my mother's husband." How is the man related to Rekha?ExplanationMother's husband is Rekha's father. His only son is Rekha's brother.
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Q11 EasyM is the only sister of N. P is the father of M. How is P related to N?ExplanationM and N are siblings; P is father of both.
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Q12 EasyHow is a man's father's only daughter related to the man?ExplanationFather's daughter is the man's sister.
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Q13 EasyA is B's mother's brother. How is A related to B?ExplanationMother's brother is the maternal uncle.
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Q14 EasyX is the father of Y. Y is the father of Z. How is X related to Z?ExplanationX is Y's father and Y is Z's father, so X is Z's grandfather.
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Q15 EasyIf A is the brother of B and B is the sister of C, how is A related to C?ExplanationA, B, and C are siblings; A is C's brother.
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Q16 EasyPointing to a man, Meera said, "His mother's only daughter is my mother." How is Meera related to the man?ExplanationSame structure as the Asha photo puzzle: Meera is the man's niece.
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Q17 EasyIntroducing a boy, Sunita said, "His mother is the only daughter of my father." How is Sunita related to the boy?ExplanationSunita is the boy's mother.
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Q18 EasyPointing to a girl, Vikram said, "She is the daughter of my grandmother's only son." How is the girl related to Vikram?ExplanationThe girl is Vikram's sister.
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Q19 EasyP is the brother of Q. R is the wife of Q. S is the son of R. How is P related to S?ExplanationS is Q's son; P is Q's brother, so P is S's uncle.
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Q20 EasyA is the father of B. B is the sister of C. How is A related to C?ExplanationA is father of both B and C.
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Q21 EasyMohan is Anita's brother. Priya is Anita's mother. How is Mohan related to Priya?ExplanationMohan is Priya's son.
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Q22 EasyRita is the daughter of Amit's father. How is Rita related to Amit?ExplanationRita is Amit's sister.
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Q23 EasyT is the only brother of U. V is the father of T. How is V related to U?ExplanationV is U's father.
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Q24 EasyHow is a woman's mother's only son related to the woman?ExplanationMother's only son is the woman's brother.
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Q25 EasyA is B's father's brother. How is A related to B?ExplanationA is B's paternal uncle.
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Q26 EasyM is the mother of N. N is the mother of O. How is M related to O?ExplanationM is O's grandmother.
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Q27 EasyIf X is the sister of Y and Y is the brother of Z, how is X related to Z?ExplanationX and Z are siblings; X is Z's sister.
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Q28 MediumPointing to a lady, Raj said, "She is my mother's father's only daughter." How is the lady related to Raj?ExplanationMother's father's only daughter is Raj's mother.
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Q29 MediumPointing to a boy, a woman said, "His mother is the only daughter of my mother." How is the woman related to the boy?ExplanationThe only daughter of the woman's mother is the woman herself, so she is the boy's mother.
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Q30 MediumPointing to a woman, Karan said, "She is my father's only son's wife." How is the woman related to Karan?ExplanationFather's only son is Karan or his brother. That son's wife is Karan's sister-in-law.
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Q31 MediumPointing to a photo, Sam said, "That man is the son of my mother's only son." How is Sam related to the man?ExplanationMother's only son is Sam. The man is Sam's son, so Sam is the man's father.
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Q32 MediumPointing to a photograph, Sam said, "That man is the brother of my father's son." How is Sam related to the man?ExplanationFather's son is Sam or Sam's brother. The man is brother of that person, so he is Sam's brother.
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Q33 MediumPointing to a man, Lata said, "He is my mother's father's only son." How is the man related to Lata?ExplanationHe is Lata's maternal uncle.
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Q34 MediumKiran said about a boy, "He is the son of my father's only son." How is the boy related to Kiran?ExplanationKiran is the father's only son, so the boy is Kiran's son.
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Q35 MediumPointing to a girl, a man said, "Her mother is the only daughter of my mother." How is the man related to the girl?ExplanationThe girl's mother is the man's sister, so the man is her uncle.
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Q36 MediumPointing to a man, Divya said, "He is the husband of my mother's only daughter." How is Divya related to the man?ExplanationDivya is her mother's only daughter, so the man is Divya's husband and Divya is his wife.
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Q37 MediumPointing to a photo, Ali said, "That woman is the sister of my father's son." How is Ali related to the woman?ExplanationThe woman is Ali's sister; Ali is her brother.
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Q38 MediumSanjay is the son of the only daughter of Rekha's father. How is Sanjay related to Rekha?ExplanationRekha is the only daughter of her father. Sanjay is Rekha's son.
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Q39 MediumIntroducing a lady, a man said, "She is the daughter of my wife's husband." How is the lady related to the man?ExplanationWife's husband is the man himself. The lady is his daughter.
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Q40 HardPointing to a boy, a woman said, "He is the only grandson of my father." The woman has no brothers. How is the woman related to the boy?ExplanationThe boy is grandson of her father, so he is her son (or nephew via a sister; no brothers makes mother the intended answer).