Blood Relations is an important topic under the Reasoning Ability section of the RBI Assistant exam. These questions test a candidate’s ability to understand and analyze family relationships using logical deduction. Questions may be direct relation-based, puzzle-based, or seating arrangement combined with blood relations. A clear and structured approach is essential to solve them accurately.
Blood Relation Questions for RBI Assistant
Practice blood relation questions for RBI Assistant 2026.
1. Pointing to a photograph, a man says, “She is the daughter of my grandfather’s only son.” How is the woman related to the man?
a) Sister
b) Cousin
c) Aunt
d) Niece
e) Cannot be determined
Answer: a) Sister
2. A woman introduces a man as the son of the brother of her mother. How is the man related to the woman?
a) Cousin
b) Brother
c) Uncle
d) Nephew
e) Brother-in-law
Answer: a) Cousin
3. P is the brother of Q. Q is the mother of R. How is P related to R?
a) Father
b) Uncle
c) Brother
d) Grandfather
e) Cousin
Answer: b) Uncle
4. X is the daughter of Y. Y is the son of Z. How is Z related to X?
a) Father
b) Grandmother/Grandfather
c) Uncle
d) Brother
e) Cousin
Answer: b) Grandmother/Grandfather
5. A is the sister of B. B is the father of C. How is A related to C?
a) Mother
b) Aunt
c) Sister
d) Grandmother
e) Cousin
Answer: b) Aunt
6. M is married to N. N is the sister of O. How is M related to O?
a) Brother
b) Brother-in-law
c) Cousin
d) Father
e) Uncle
Answer: b) Brother-in-law
7. T is the son of R. R is the daughter of P. How is T related to P?
a) Grandson
b) Son
c) Nephew
d) Brother
e) Cousin
Answer: a) Grandson
8. A man says, “The only son of my mother is the father of your son.” How is the man related to the child?
a) Grandfather
b) Father
c) Uncle
d) Brother
e) Cousin
Answer: b) Father
9. R is the wife of S. S is the son of T. How is R related to T?
a) Daughter
b) Daughter-in-law
c) Sister
d) Mother
e) Aunt
Answer: b) Daughter-in-law
10. P is the sister of Q. Q is married to R. How is P related to R?
a) Sister-in-law
b) Wife
c) Cousin
d) Aunt
e) Mother
Answer: a) Sister-in-law
11. A is the father of B. C is the brother of B. How is C related to A?
a) Son
b) Brother
c) Father
d) Uncle
e) Cousin
Answer: a) Son
12. A woman says, “He is the son of my father’s only son.” How is the man related to the woman?
a) Brother
b) Son
c) Cousin
d) Uncle
e) Nephew
Answer: b) Son
13. X is the brother of Y. Y is the sister of Z. How is X related to Z?
a) Brother
b) Cousin
c) Uncle
d) Father
e) Nephew
Answer: a) Brother
14. A is the husband of B. C is the father of A. How is C related to B?
a) Brother
b) Father-in-law
c) Uncle
d) Grandfather
e) Cousin
Answer: b) Father-in-law
15. R is the mother of S. S is the brother of T. How is R related to T?
a) Aunt
b) Mother
c) Sister
d) Grandmother
e) Cousin
Answer: b) Mother
16. P is the son of Q. Q is married to R. How is R related to P?
a) Father/Mother
b) Aunt
c) Sister
d) Cousin
e) Uncle
Answer: a) Father/Mother
17. A man says, “My mother’s father is your father.” How is the man related to the person?
a) Brother
b) Uncle
c) Cousin
d) Father
e) Nephew
Answer: a) Brother
18. If A is the mother of B and C is the husband of A, how is C related to B?
a) Brother
b) Uncle
c) Father
d) Grandfather
e) Cousin
Answer: c) Father
19. D is the daughter of E. F is the husband of D. How is F related to E?
a) Son
b) Son-in-law
c) Brother
d) Father
e) Cousin
Answer: b) Son-in-law
20. G is the father of H. H is the sister of I. How is G related to I?
a) Father
b) Uncle
c) Brother
d) Cousin
e) Grandfather
Answer: a) Father
21. J is the brother of K. K is married to L. How is J related to L?
a) Brother-in-law
b) Cousin
c) Father
d) Son
e) Uncle
Answer: a) Brother-in-law
22. A is the daughter of B. B is the son of C. How is C related to A?
a) Father
b) Grandparent
c) Uncle
d) Cousin
e) Brother
Answer: b) Grandparent
23. P is the father of Q and R. R is the sister of Q. How is P related to R?
a) Uncle
b) Brother
c) Father
d) Cousin
e) Grandfather
Answer: c) Father
24. X is married to Y. Y is the mother of Z. How is X related to Z?
a) Father
b) Uncle
c) Brother
d) Cousin
e) Grandfather
Answer: a) Father
25. A woman says, “My father’s sister is your mother.” How is the woman related to the person?
a) Cousin
b) Sister
c) Aunt
d) Niece
e) Mother
Answer: a) Cousin
26. M is the son of N. N is the daughter of O. How is M related to O?
a) Grandson
b) Son
c) Brother
d) Nephew
e) Cousin
Answer: a) Grandson
27. A is brother of B. C is father of A. How is C related to B?
a) Father
b) Uncle
c) Brother
d) Cousin
e) Grandfather
Answer: a) Father
28. R is the mother of S. T is the father of R. How is T related to S?
a) Grandfather
b) Father
c) Uncle
d) Brother
e) Cousin
Answer: a) Grandfather
29. X is the son of Y. Y is the wife of Z. How is Z related to X?
a) Father
b) Uncle
c) Brother
d) Cousin
e) Grandfather
Answer: a) Father
30. A man says, “She is the wife of the only son of my grandfather.” How is the woman related to the man?
a) Mother
b) Sister
c) Aunt
d) Cousin
e) Sister-in-law
Answer: a) Mother
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