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Blood Relations aptitude questions

Family trees from statements — draw, then answer.

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Formula sheetBlood Relations: the essentialsFormula sheetBlood Relations: the essentialsShow

Never hold a family in your head: draw it.

Drawing the tree

  • Put each generation on its own level, oldest at the top. Join parent and child with a vertical line, spouses with a double line (=) and siblings with a single horizontal line.
  • Mark sex as you learn it, + for male and − for female. Never assume it from a name; if the statements leave it open, the answer may be 'cannot be determined'.
  • Resolve a description from the innermost phrase outwards, one person at a time. The word only collapses a phrase onto the speaker: 'the only son of my father', said by a man, is the man himself.
  • For coded relations (A + B means A is the mother of B), translate every symbol into a sentence first.
  • Mind the direction: 'How is A related to B?' asks what A is to B.

Relations to know

  • A parent's brother or sister is an uncle or aunt: maternal on the mother's side, paternal on the father's.
  • A sibling's child is a nephew or niece; a parent's sibling's child is a cousin, and the relation holds both ways.
  • A spouse's parent is a father- or mother-in-law; a spouse's sibling, or a sibling's spouse, is a brother- or sister-in-law.

Example: a man says, 'She is the daughter of the only son of my mother.' His mother's only son is the man himself, so she is his daughter.

Questions31

1

Pointing at a photograph

Pointing to a photograph, a man says, 'He is the son of the only son of my father.' How is the man related to the person in the photograph?

photograph

60s

Medium2

Mother's brother's daughter

How is your mother's brother's daughter related to you?

chain

45s

Easy3

A woman and a photograph

A woman says, 'That girl is the daughter of the only daughter of my mother.' How is the girl related to the woman?

photograph

45s

Medium4

Who is the grandfather?

In a family: A is B's father, B is C's mother, C is D's sister and E is A's wife. How is E related to D?

family tree

75s

Medium5

His mother is my mother's only daughter

Pointing to a man, a woman said, 'His mother is the only daughter of my mother.' How is the woman related to the man?

photograph

60s

Medium6

I have no brother or sister

Looking at a portrait, a man said, 'I have no brother or sister, but that man's father is my father's son.' Whose portrait is it?

photograph

90s

Hard7

My grandfather's only son

Pointing to a lady, a man said, 'She is the daughter of my grandfather's only son.' How is the lady related to the man?

photograph

60s

Medium8

My mother's mother's only son

Introducing a man, a woman said, 'He is the only son of my mother's mother.' How is the woman related to the man?

photograph

75s

Medium9

My father's brother's son

How is your father's brother's son related to you?

chain

45s

Easy10

My father's only sister's daughter

Pointing to a girl, Rajan said, 'She is the daughter of the only sister of my father.' How is the girl related to Rajan?

chain

45s

Easy11

Brother of Y's son's son

If X is the brother of the son of Y's son, how is X related to Y?

chain

60s

Medium12

A four-generation chain

P is Q's brother, R is Q's mother, S is R's father and T is S's mother. How is P related to T?

family tree

105s

Hard13

How is E related to C

A is B's brother, C is D's father, E is B's mother, and A and D are brothers. How is E related to C?

family tree

105s

Hard14

Deepak, Ravi and Rekha

Deepak is the brother of Ravi, Rekha is the sister of Atul, and Ravi is the son of Rekha. How is Deepak related to Rekha?

family tree

60s

Medium15

Atul and Deepak

Deepak is the brother of Ravi, Rekha is the sister of Atul, and Ravi is the son of Rekha. How is Atul related to Deepak?

family tree

60s

Medium16

A shared grandfather

A's mother's father is B's father. How is A related to B?

family tree

105s

Hard17

Ravi's mother and Rani

Ravi's mother is the only daughter of Rani's father. How is Rani related to Ravi?

photograph

75s

Medium18

She has no sister or daughter

Pointing to a photograph of a girl, Rajesh said, 'She has no sister or daughter, but her mother is the only daughter of my mother.' How is the girl related to…

photograph

105s

Hard19

My nephew's maternal grandmother

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

photograph

120s

Hard20

X, Y, Z and W

X is Y's father, Z is Y's sister and W is Z's mother. How is X related to W?

family tree

60s

Medium21

M, N, O and P

M is the sister of N, N is the brother of O, and O is the daughter of P. How is M related to P?

family tree

60s

Easy22

D and A

A is B's daughter, B is C's mother and D is C's brother. How is D related to A?

family tree

75s

Medium23

Relations written as symbols

If A + B means A is the mother of B and A × B means A is the sister of B, what does P + Q × R mean?

symbols

75s

Medium24

Another symbol chain

If A − B means A is the brother of B and A × B means A is the father of B, what does P × Q − R mean?

symbols

75s

Medium25

Q and R

If P is the wife of Q and R is the son of P, how is Q related to R?

chain

45s

Easy26

Bindu and Mahipal

Neena says, 'Anita's father Raman is the only son of my father-in-law Mahipal.' How is Bindu, who is Anita's sister, related to Mahipal?

family tree

90s

Medium27

B and D

B is the husband of P. Q is the only grandson of E, who is the wife of D and the mother-in-law of P. How is B related to D?

family tree

120s

Hard28

That man's son

A woman said, 'The son of that man is my father's son's son.' How is the man related to the woman?

photograph

120s

Hard29

The son of the daughter of my uncle's father

Introducing a boy, a girl said, 'He is the son of the daughter of the father of my uncle.' How is the boy related to the girl?

photograph

120s

Hard30

Four generations

A is the father of B, C is the daughter of B, and E is the son of C. How is E related to A?

family tree

60s

Medium31

My mother's brother's daughter again

Pointing to a woman, a man said, 'She is the daughter of my mother's only brother.' How is the man related to the woman?

chain

45s

Easy

Showing 31 of 31

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Blood Relations Aptitude Questions with Solutions

31 Blood Relations questions with hints, worked solutions and time targets — 6 easy · 16 medium · 9 hard. Family trees from statements — draw, then answer.

  • Section: Logical Reasoning
  • Questions: 31
  • By difficulty: 6 easy · 16 medium · 9 hard
  • Cost: Free, unlimited on every plan

Family trees from statements — draw, then answer.

Blood Relations: the essentials

Never hold a family in your head: draw it.

Drawing the tree

  • Put each generation on its own level, oldest at the top. Join parent and child with a vertical line, spouses with a double line (=) and siblings with a single horizontal line.
  • Mark sex as you learn it, + for male and − for female. Never assume it from a name; if the statements leave it open, the answer may be 'cannot be determined'.
  • Resolve a description from the innermost phrase outwards, one person at a time. The word only collapses a phrase onto the speaker: 'the only son of my father', said by a man, is the man himself.
  • For coded relations (A + B means A is the mother of B), translate every symbol into a sentence first.
  • Mind the direction: 'How is A related to B?' asks what A is to B.

Relations to know

  • A parent's brother or sister is an uncle or aunt: maternal on the mother's side, paternal on the father's.
  • A sibling's child is a nephew or niece; a parent's sibling's child is a cousin, and the relation holds both ways.
  • A spouse's parent is a father- or mother-in-law; a spouse's sibling, or a sibling's spouse, is a brother- or sister-in-law.

Example: a man says, 'She is the daughter of the only son of my mother.' His mother's only son is the man himself, so she is his daughter.

Questions

  1. Pointing at a photograph Medium
    Pointing to a photograph, a man says, 'He is the son of the only son of my father.' How is the man related to the person in the photograph?
  2. Mother's brother's daughter Easy
    How is your mother's brother's daughter related to you?
  3. A woman and a photograph Medium
    A woman says, 'That girl is the daughter of the only daughter of my mother.' How is the girl related to the woman?
  4. Who is the grandfather? Medium
    In a family: A is B's father, B is C's mother, C is D's sister and E is A's wife. How is E related to D?
  5. His mother is my mother's only daughter Medium
    Pointing to a man, a woman said, 'His mother is the only daughter of my mother.' How is the woman related to the man?
  6. I have no brother or sister Hard
    Looking at a portrait, a man said, 'I have no brother or sister, but that man's father is my father's son.' Whose portrait is it?
  7. My grandfather's only son Medium
    Pointing to a lady, a man said, 'She is the daughter of my grandfather's only son.' How is the lady related to the man?
  8. My mother's mother's only son Medium
    Introducing a man, a woman said, 'He is the only son of my mother's mother.' How is the woman related to the man?
  9. My father's brother's son Easy
    How is your father's brother's son related to you?
  10. My father's only sister's daughter Easy
    Pointing to a girl, Rajan said, 'She is the daughter of the only sister of my father.' How is the girl related to Rajan?
  11. Brother of Y's son's son Medium
    If X is the brother of the son of Y's son, how is X related to Y?
  12. A four-generation chain Hard
    P is Q's brother, R is Q's mother, S is R's father and T is S's mother. How is P related to T?
  13. How is E related to C Hard
    A is B's brother, C is D's father, E is B's mother, and A and D are brothers. How is E related to C?
  14. Deepak, Ravi and Rekha Medium
    Deepak is the brother of Ravi, Rekha is the sister of Atul, and Ravi is the son of Rekha. How is Deepak related to Rekha?
  15. Atul and Deepak Medium
    Deepak is the brother of Ravi, Rekha is the sister of Atul, and Ravi is the son of Rekha. How is Atul related to Deepak?
  16. A shared grandfather Hard
    A's mother's father is B's father. How is A related to B?
  17. Ravi's mother and Rani Medium
    Ravi's mother is the only daughter of Rani's father. How is Rani related to Ravi?
  18. She has no sister or daughter Hard
    Pointing to a photograph of a girl, Rajesh said, 'She has no sister or daughter, but her mother is the only daughter of my mother.' How is the girl related to…
  19. My nephew's maternal grandmother Hard
    A man pointing to a photograph says, 'The lady in the photograph is my nephew's maternal grandmother.' How is the lady related to the man's sister, who has no…
  20. X, Y, Z and W Medium
    X is Y's father, Z is Y's sister and W is Z's mother. How is X related to W?
  21. M, N, O and P Easy
    M is the sister of N, N is the brother of O, and O is the daughter of P. How is M related to P?
  22. D and A Medium
    A is B's daughter, B is C's mother and D is C's brother. How is D related to A?
  23. Relations written as symbols Medium
    If A + B means A is the mother of B and A × B means A is the sister of B, what does P + Q × R mean?
  24. Another symbol chain Medium
    If A − B means A is the brother of B and A × B means A is the father of B, what does P × Q − R mean?
  25. Q and R Easy
    If P is the wife of Q and R is the son of P, how is Q related to R?
  26. Bindu and Mahipal Medium
    Neena says, 'Anita's father Raman is the only son of my father-in-law Mahipal.' How is Bindu, who is Anita's sister, related to Mahipal?
  27. B and D Hard
    B is the husband of P. Q is the only grandson of E, who is the wife of D and the mother-in-law of P. How is B related to D?
  28. That man's son Hard
    A woman said, 'The son of that man is my father's son's son.' How is the man related to the woman?
  29. The son of the daughter of my uncle's father Hard
    Introducing a boy, a girl said, 'He is the son of the daughter of the father of my uncle.' How is the boy related to the girl?
  30. Four generations Medium
    A is the father of B, C is the daughter of B, and E is the son of C. How is E related to A?
  31. My mother's brother's daughter again Easy
    Pointing to a woman, a man said, 'She is the daughter of my mother's only brother.' How is the man related to the woman?

Placement tests that ask blood relations