Blood relations is a chapter where you do not need a single formula, you need a pen. Students try to solve these in their head and that is exactly why they get them wrong. Draw the family tree, always. Put the older generation on top, the younger below, and mark male with a plus and female with a minus so you never mix up who is the son and who is the daughter. The second trap is language. In Hindi we say mama and chacha and the relation is instantly clear, but the paper says maternal uncle and paternal uncle, so learn those English terms cold. Solve the statement one sentence at a time from the last name backwards, and these questions become the fastest marks in the reasoning section.
Blood Relations Rules and Shortcuts
Read the sentence backwards
In a sentence like “Pointing to a man, Ravi said, he is the son of my mother’s only brother”, start from the last relation and walk back to Ravi.
Mother’s only brother = maternal uncle. His son = Ravi’s cousin.
Never start from the front, you will lose the thread.
Draw the tree the same way every time
Same generation side by side, older generation above, younger generation below.
Male = + and Female = −
Married couple = double line between them
Brother or sister = single line between them
Parent to child = vertical line downward
Generation count
Same generation: brother, sister, husband, wife, cousin, brother-in-law, sister-in-law
One generation up: father, mother, uncle, aunt, father-in-law, mother-in-law
One generation down: son, daughter, nephew, niece, son-in-law, daughter-in-law
Two generations up: grandfather, grandmother
Two generations down: grandson, granddaughter
The relations students confuse most
Father’s brother = paternal uncle (chacha)
Mother’s brother = maternal uncle (mama)
Father’s sister = paternal aunt (bua)
Mother’s sister = maternal aunt (mausi)
Uncle’s or aunt’s child = cousin, and cousin has no gender, so the paper must tell you if it is a boy or girl
Brother’s or sister’s son = nephew
Brother’s or sister’s daughter = niece
Sister’s husband or husband’s brother or wife’s brother = brother-in-law
Brother’s wife or husband’s sister or wife’s sister = sister-in-law
Grandfather’s or grandmother’s only son = your father, if no other son is mentioned
The only son or only daughter trick
“My mother’s only son” means the speaker himself, if the speaker is male.
“My father’s only daughter” means the speaker herself, if the speaker is female.
Check the gender of the speaker before you answer. This single line decides half these questions.
Coded blood relations
When the paper gives symbols, decode them one by one and write the meaning above each symbol.
A + B means A is the father of B
A − B means A is the wife of B
A × B means A is the brother of B
A ÷ B means A is the mother of B
The symbols change from paper to paper, so read the key given in that question, never assume.
Reading the coded chain
In P + Q − R, solve left to right in pairs.
P + Q means P is the father of Q. Q − R means Q is the wife of R. So P is the father-in-law of R.
Generation gap shortcut for puzzles
If a puzzle asks how a person is related to another and the answer options include maternal and paternal versions, trace which parent the link passes through. Link through the mother gives maternal, link through the father gives paternal.
60 Blood Relations Reasoning Questions and Answers (Solved MCQs)
Question 1. Arjun is the son of Meera. Meera is the sister of Karan. How is Karan related to Arjun?
a) Brother
b) Maternal Uncle
c) Paternal Uncle
d) Grandfather
Answer:
b) Maternal Uncle — Karan is the brother of Arjun’s mother, Meera.
Question 2. Kavita is the mother of Rohan. Rohan is the brother of Neha. How is Kavita related to Neha?
a) Aunt
b) Sister
c) Mother
d) Grandmother
Answer:
c) Mother — Rohan and Neha are siblings, so Kavita is also Neha’s mother.
Question 3. Mohan is the father of Deepak. Deepak is the father of Ananya. How is Mohan related to Ananya?
a) Maternal Grandfather
b) Paternal Grandfather
c) Uncle
d) Father
Answer:
b) Paternal Grandfather — Mohan is the father of Ananya’s father.
Question 4. Suman is the sister of Rajesh. Rajesh is the father of Varun. How is Suman related to Varun?
a) Maternal Aunt
b) Paternal Aunt
c) Sister
d) Grandmother
Answer:
b) Paternal Aunt — Suman is the sister of Varun’s father.
Question 5. Riya is the daughter of Vikram. Vikram is the brother of Nisha. How is Nisha related to Riya?
a) Aunt
b) Mother
c) Sister
d) Cousin
Answer:
a) Aunt — Nisha is the sister of Riya’s father.
Question 6. Aman is the son of Priya. Priya is the daughter of Shyam. How is Shyam related to Aman?
a) Father
b) Uncle
c) Grandfather
d) Brother
Answer:
c) Grandfather — Shyam is Aman’s mother’s father.
Question 7. Pooja is the wife of Ravi. Ravi is the son of Mahesh. How is Mahesh related to Pooja?
a) Father-in-law
b) Brother-in-law
c) Uncle
d) Grandfather
Answer:
a) Father-in-law — Mahesh is the father of Pooja’s husband.
Question 8. Neeraj is the brother of Sonia. Sonia is the mother of Ritu. How is Neeraj related to Ritu?
a) Father
b) Uncle
c) Grandfather
d) Brother
Answer:
b) Uncle — Neeraj is the brother of Ritu’s mother.
Question 9. Gaurav is the father of Kunal. Kunal is the brother of Tina. How is Gaurav related to Tina?
a) Uncle
b) Brother
c) Father
d) Grandfather
Answer:
c) Father — Kunal and Tina are siblings.
Question 10. Seema is the daughter of Nitin. Nitin is the son of Rakesh. How is Rakesh related to Seema?
a) Father
b) Uncle
c) Grandfather
d) Brother
Answer:
c) Grandfather — Rakesh is the father of Seema’s father.
Question 11. Rahul is the brother of Sneha. Sneha is the wife of Mohit. How is Rahul related to Mohit?
a) Brother-in-law
b) Uncle
c) Cousin
d) Father-in-law
Answer:
a) Brother-in-law — Rahul is the brother of Mohit’s wife.
Question 12. Anjali is the mother of Tarun. Tarun is the father of Rohan. How is Anjali related to Rohan?
a) Mother
b) Aunt
c) Grandmother
d) Sister
Answer:
c) Grandmother — Anjali is the mother of Rohan’s father.
Question 13. Rohit is the son of Alok. Alok is the brother of Suresh. How is Suresh related to Rohit?
a) Uncle
b) Grandfather
c) Father
d) Brother
Answer:
a) Uncle — Suresh is the brother of Rohit’s father.
Question 14. Meena is the sister of Ajay. Ajay is the father of Komal. How is Meena related to Komal?
a) Cousin
b) Aunt
c) Mother
d) Sister
Answer:
b) Aunt — Meena is the sister of Komal’s father.
Question 15. Deepa is the daughter of Raj. Raj is married to Naina. How is Naina related to Deepa?
a) Aunt
b) Sister
c) Mother
d) Grandmother
Answer:
c) Mother — Naina is the wife of Deepa’s father, Raj.
Question 16. A is the brother of B. B is the mother of C. How is A related to C?
a) Father
b) Uncle
c) Brother
d) Grandfather
Answer:
b) Uncle — A is the brother of C’s mother.
Question 17. P is the father of Q. Q is the sister of R. How is P related to R?
a) Uncle
b) Brother
c) Father
d) Grandfather
Answer:
c) Father — Q and R are siblings, so P is also R’s father.
Question 18. M is the daughter of N. N is the wife of O. How is O related to M?
a) Father
b) Uncle
c) Brother
d) Grandfather
Answer:
a) Father — O is the husband of M’s mother.
Question 19. A is the mother of B. B is the father of C. How is A related to C?
a) Aunt
b) Grandmother
c) Mother
d) Sister
Answer:
b) Grandmother — A is the mother of C’s father.
Question 20. R is the brother of S. S is the mother of T. How is R related to T?
a) Uncle
b) Father
c) Grandfather
d) Brother
Answer:
a) Uncle — R is the brother of T’s mother.
Question 21. X is the son of Y. Y is the daughter of Z. How is Z related to X?
a) Mother
b) Grandmother
c) Sister
d) Aunt
Answer:
b) Grandmother — Z is the mother of X’s mother.
Question 22. K is the father of L. L is the husband of M. How is K related to M?
a) Father-in-law
b) Uncle
c) Brother-in-law
d) Grandfather
Answer:
a) Father-in-law — K is the father of M’s husband.
Question 23. D is the sister of E. E is the father of F. How is D related to F?
a) Aunt
b) Mother
c) Grandmother
d) Cousin
Answer:
a) Aunt — D is the sister of F’s father.
Question 24. A is the father of B. B is the father of C. C is the father of D. How is A related to D?
a) Grandfather
b) Great-grandfather
c) Uncle
d) Father
Answer:
b) Great-grandfather — A is three generations above D.
Question 25. P is the mother of Q. Q is the sister of R. R is the father of S. How is P related to S?
a) Grandmother
b) Aunt
c) Mother
d) Great-grandmother
Answer:
a) Grandmother — P is the mother of S’s father.
Question 26. A is the wife of B. B is the brother of C. How is A related to C?
a) Sister
b) Sister-in-law
c) Aunt
d) Mother
Answer:
b) Sister-in-law — A is married to C’s brother.
Question 27. M is the father of N. N is the brother of O. O is the mother of P. How is M related to P?
a) Grandfather
b) Father
c) Uncle
d) Great-grandfather
Answer:
a) Grandfather — M is the father of P’s mother.
Question 28. R is the son of S. S is the son of T. How is T related to R?
a) Father
b) Uncle
c) Grandfather
d) Brother
Answer:
c) Grandfather — T is the father of R’s father.
Question 29. X is the brother of Y. Y is the wife of Z. How is X related to Z?
a) Uncle
b) Brother-in-law
c) Father-in-law
d) Cousin
Answer:
b) Brother-in-law — X is the brother of Z’s wife.
Question 30. A is the daughter of B. B is the daughter of C. How is C related to A?
a) Mother
b) Grandmother
c) Sister
d) Aunt
Answer:
b) Grandmother — C is the mother of A’s mother.
Question 31. Pointing to a woman, Rakesh said, “She is the daughter of the only son of my grandfather.” How is the woman related to Rakesh?
a) Sister
b) Cousin
c) Niece
d) Aunt
Answer:
a) Sister — The only son of Rakesh’s grandfather is Rakesh’s father. Therefore, the woman is his father’s daughter and hence his sister.
Question 32. Pointing to a boy, Neha said, “He is the son of the only daughter of my mother.” How is the boy related to Neha?
a) Brother
b) Son
c) Nephew
d) Cousin
Answer:
b) Son — The only daughter of Neha’s mother is Neha herself. Therefore, the boy is Neha’s son.
Question 33. Introducing a man, Pooja said, “His wife is the only daughter of my father.” How is the man related to Pooja?
a) Brother
b) Husband
c) Brother-in-law
d) Uncle
Answer:
b) Husband — The only daughter of Pooja’s father is Pooja herself. Therefore, the man is Pooja’s husband.
Question 34. Pointing to a photograph, Amit said, “The woman in the photograph is the mother of the only son of my mother.” How is the woman related to Amit?
a) Sister
b) Mother
c) Wife
d) Aunt
Answer:
b) Mother — The only son of Amit’s mother is Amit. Therefore, the woman is Amit’s mother.
Question 35. Pointing to a girl, Sunil said, “She is the daughter of the wife of my father’s only son.” How is the girl related to Sunil?
a) Sister
b) Daughter
c) Niece
d) Cousin
Answer:
b) Daughter — Sunil is his father’s only son. The wife of Sunil is the girl’s mother, so the girl is Sunil’s daughter.
Question 36. A woman introduces a man as “the son of the brother of my mother.” How is the man related to the woman?
a) Brother
b) Cousin
c) Nephew
d) Uncle
Answer:
b) Cousin — The brother of the woman’s mother is her maternal uncle. His son is her cousin.
Question 37. Pointing to a man, Anil said, “His mother is the only daughter of my mother.” How is the man related to Anil?
a) Brother
b) Son
c) Nephew
d) Cousin
Answer:
c) Nephew — The only daughter of Anil’s mother is Anil’s sister. Her son is Anil’s nephew.
Question 38. Pointing to a woman, Raj said, “She is the wife of the only son of my father’s father.” How is the woman related to Raj?
a) Sister
b) Mother
c) Aunt
d) Wife
Answer:
b) Mother — Raj’s father’s father is his paternal grandfather. The grandfather’s only son is Raj’s father, whose wife is Raj’s mother.
Question 39. Pointing to a boy, Reena said, “He is the brother of the daughter of my husband.” How is the boy related to Reena?
a) Brother
b) Son
c) Nephew
d) Cousin
Answer:
b) Son — The daughter of Reena’s husband is Reena’s daughter. Her brother is Reena’s son.
Question 40. Pointing to a lady, Kunal said, “She is the mother of the husband of my mother.” How is the lady related to Kunal?
a) Maternal Grandmother
b) Paternal Grandmother
c) Aunt
d) Mother
Answer:
b) Paternal Grandmother — The husband of Kunal’s mother is Kunal’s father. The mother of his father is his paternal grandmother.
Question 41. In a family, P and Q are married. R and S are their children. T is the wife of R, and U is the son of R and T. How is Q related to U?
a) Mother
b) Grandmother
c) Aunt
d) Mother-in-law
Answer:
b) Grandmother — Q is the mother of R, and U is R’s son. Therefore, Q is U’s grandmother.
Question 42. A and B are husband and wife. C is their son. D is the wife of C, and E is the daughter of C and D. How is B related to E?
a) Mother
b) Maternal Grandmother
c) Paternal Grandmother
d) Aunt
Answer:
c) Paternal Grandmother — B is the mother of E’s father, C.
Question 43. M is the father of N and O. N is a woman and is married to P. Q is the son of N and P. How is O related to Q?
a) Father
b) Maternal Uncle or Aunt
c) Paternal Uncle
d) Grandfather
Answer:
b) Maternal Uncle or Aunt — O is the sibling of Q’s mother, N. Since O’s gender is not specified, O may be Q’s maternal uncle or maternal aunt.
Question 44. A is the mother of B and C. B is the father of D, while C is the mother of E. How are D and E related?
a) Siblings
b) Cousins
c) Uncle and Nephew
d) Brother-in-law and Sister-in-law
Answer:
b) Cousins — B and C are siblings, so their children D and E are cousins.
Question 45. P is the father of Q. R is the mother of Q. S is the brother of R, and T is the daughter of S. How is T related to Q?
a) Sister
b) Paternal Cousin
c) Maternal Cousin
d) Niece
Answer:
c) Maternal Cousin — S is the brother of Q’s mother, so S’s daughter T is Q’s maternal cousin.
Question 46. Pointing to a woman, Ravi said, “Her mother’s only brother is the father of my wife.” How is the woman related to Ravi’s wife?
a) Sister
b) Maternal Cousin
c) Paternal Cousin
d) Aunt
Answer:
b) Maternal Cousin — The woman’s maternal uncle is the father of Ravi’s wife. Therefore, the woman’s mother and Ravi’s wife’s father are siblings, making the two women maternal cousins.
Question 47. A is the brother of B. B is the daughter of C. D is the husband of C. E is the brother of D. How is E related to A?
a) Maternal Uncle
b) Paternal Uncle
c) Brother
d) Grandfather
Answer:
b) Paternal Uncle — D is A’s father, and E is D’s brother. Therefore, E is A’s paternal uncle.
Question 48. Introducing a man, Seema said, “He is the husband of the only granddaughter of my mother’s mother.” How is the man related to Seema?
a) Brother
b) Husband
c) Brother-in-law
d) Son-in-law
Answer:
b) Husband — Seema’s mother’s mother is her maternal grandmother. Her only granddaughter is Seema, so the man is Seema’s husband.
Question 49. P and Q are married. R is their son, and S is their daughter. T is the wife of R. U is the husband of S. V is the daughter of R and T. How is U related to V?
a) Paternal Uncle
b) Maternal Uncle
c) Uncle by Marriage
d) Father-in-law
Answer:
c) Uncle by Marriage — U is the husband of V’s paternal aunt, S. Therefore, U is V’s uncle by marriage.
Question 50. A is the mother of B. C is the father of A. D is the mother of C. E is the husband of D. How is E related to B?
a) Grandfather
b) Great-grandfather
c) Maternal Grandfather
d) Uncle
Answer:
b) Great-grandfather — C is B’s maternal grandfather, D is C’s mother, and E is D’s husband. Therefore, E is B’s maternal great-grandfather.
Question 51. Pointing to a boy, Nisha said, “His father is the only son of my husband’s mother.” How is the boy related to Nisha?
a) Son
b) Nephew
c) Brother
d) Cousin
Answer:
a) Son — The only son of Nisha’s husband’s mother is Nisha’s husband. Therefore, the boy is Nisha’s son.
Question 52. M is the sister of N. N is the father of O. P is the wife of O. Q is the daughter of O and P. How is M related to Q?
a) Maternal Grandmother
b) Paternal Grandmother
c) Grand-aunt
d) Aunt
Answer:
c) Grand-aunt — M is the sister of Q’s paternal grandfather, N. Therefore, M is Q’s grand-aunt.
Question 53. A woman said, “The father of this boy is the son of my husband’s father.” If the woman has only one husband and her husband has no brothers, how is the boy related to the woman?
a) Son
b) Nephew
c) Grandson
d) Brother
Answer:
a) Son — Since the woman’s husband has no brothers, the only son of her husband’s father is her husband. Therefore, the boy is her son.
Question 54. A is the father of B and C. B is the mother of D. C is the father of E. D is married to F. How is E related to F?
a) Brother-in-law or Sister-in-law
b) Cousin-in-law
c) Nephew or Niece
d) Uncle or Aunt
Answer:
b) Cousin-in-law — D and E are cousins because their parents B and C are siblings. Since F is married to D, E is F’s cousin-in-law.
Question 55. Pointing to a photograph, Mohit said, “The person in the photograph is the father of the son of the only daughter of my mother.” Who is the person in the photograph?
a) Mohit’s Father
b) Mohit’s Brother
c) Mohit’s Brother-in-law
d) Mohit Himself
Answer:
c) Mohit’s Brother-in-law — The only daughter of Mohit’s mother is Mohit’s sister. The father of her son is her husband, who is Mohit’s brother-in-law.
Question 56. P is the mother of Q. R is the brother of P. S is the daughter of R. T is the husband of S. How is T related to Q?
a) Brother-in-law
b) Maternal Uncle
c) Cousin-in-law
d) Nephew
Answer:
c) Cousin-in-law — S is Q’s maternal cousin, and T is S’s husband. Therefore, T is Q’s cousin-in-law.
Question 57. A is the son of B. C is the mother of B. D is the brother of C. E is the daughter of D. How is E related to A?
a) Sister
b) Aunt
c) First Cousin Once Removed
d) Niece
Answer:
c) First Cousin Once Removed — B and E are first cousins because their parents C and D are siblings. Since A is B’s son, E is A’s first cousin once removed.
Question 58. In a family of six members, P and Q are married. R is the brother of P. S is the daughter of P and Q. T is the son of R. U is the wife of T. How is U related to S?
a) Sister-in-law
b) Cousin-in-law
c) Aunt
d) Niece
Answer:
b) Cousin-in-law — T is S’s cousin because their fathers, R and P, are brothers. U is T’s wife, so U is S’s cousin-in-law.
Question 59. Pointing to a girl, Deepak said, “She is the daughter of the woman who is the mother of the husband of my father’s daughter.” How is the girl related to Deepak?
a) Sister
b) Sister-in-law
c) Cousin
d) Niece
Answer:
b) Sister-in-law — Deepak’s father’s daughter is Deepak’s sister. Her husband is Deepak’s brother-in-law. The mother of that husband is the girl’s mother, so the girl is his sister and therefore Deepak’s sister-in-law.
Question 60. A is married to B. C is the daughter of A and B. D is the brother of B. E is the wife of D. F is the son of D and E. G is the daughter of C. How is F related to G?
a) Maternal Uncle
b) First Cousin Once Removed
c) Paternal Cousin
d) Brother
Answer:
b) First Cousin Once Removed — C and F are first cousins because their parents B and D are siblings. Since G is C’s daughter, F is G’s first cousin once removed.
