What Blood Relations Questions Test
- Statement-based relation chains
- Coded relations (A + B means A is mother of B)
- Family-tree puzzles with multiple generations
- Pointing-to-photograph problems
Question bank coverage by sub-pattern
How Blood Relations Appears in SSC CPO
Blood Relations is part of the General Intelligence & Reasoning section (25% of the SSC CPO syllabus).
Blood Relations Solved Examples for SSC CPO
12 exam-pattern blood relations questions from the practice bank, each with a full solution.
Introducing a man, a woman said, 'His mother is the only daughter of my mother.' How is the man related to the woman?
- A.SonCorrect
- B.Brother
- C.Nephew
- D.Uncle
Solution
The only daughter of the woman's mother is the woman herself. So the man's mother is the woman. Therefore, the man is the woman's Son.
A is the son of B. C, B's sister, has a son D and a daughter E. F is the maternal uncle of D. How is A related to D?
- A.Brother
- B.Nephew
- C.CousinCorrect
- D.Uncle
Solution
A is the son of B. C is B's sister, which makes C the aunt of A. D is the son of C. Therefore, A and D are cousins.
There are six persons A, B, C, D, E and F in a family. C is the sister of F. B is the brother of E's husband. D is the father of A and grandfather of F. There are two fathers, three brothers and a mother in the family. Who is the mother?
- A.A
- B.B
- C.C
- D.ECorrect
Solution
D is the father of A and grandfather of F, so A is the parent of F. C is the sister of F, so A is also the parent of C. Since there are two fathers, D must be one of them. Since there are only two fathers, A must be female (as D is the grandfather). B is the brother of E's husband, which means E is married. Since D is the father of A, and A is the parent of C and F, then D is the father-in-law of E. Since there is only one mother, it must be E.
Seven friends A, B, C, D, E, F and G are sitting in a straight line facing north. D is sitting exactly in the middle. A is sitting to the immediate left of D. B is sitting to the immediate right of D. C and G are sitting at the ends of the line. E is sitting to the left of C. F is the father of A and B. Who is the husband of F?
- A.A
- B.B
- C.D
- D.Cannot be determinedCorrect
Solution
The arrangement is E C D B A G. We know F is the father of A and B, but we are not given any information about who the husband of F is. Therefore, the answer is 'Cannot be determined'.
X is the brother of Y. Y is the wife of Z. Z is the son of W (SSC Direct BR 3). How is Y related to W?
- A.Daughter-in-lawCorrect
- B.Daughter
- C.Sister-in-law
- D.Niece
Solution
Y is the wife of Z, and Z is the son of W. Therefore, Y is the daughter-in-law of W.
Based on the logical principles of Family Tree Problems, determine the valid outcome or relationship.
- A.Neither Conclusion I nor Conclusion II follows
- B.Both Conclusion I and Conclusion II follow logically
- C.Conclusion I follows logically from the given premiseCorrect
- D.Conclusion II follows logically from the given premise
Solution
In Family Tree Problems, analyzing the relationship between the terms verifies that Conclusion I is a direct and necessary deduction.
A is B's brother. C is A's mother. D is C's father. E is B's son. How is E related to D?
- A.Grandson
- B.Great-GrandsonCorrect
- C.Granddaughter
- D.Great-Granddaughter
Solution
A is B's brother, C is A's mother, therefore C is also B's mother. D is C's father, which means D is the grandfather of B. E is B's son, so E is the great-grandson of D.
Eight people – A, B, C, D, E, F, G, and H – are sitting around a circular table facing the center. A is the father of G. E is the mother of H. C sits third to the left of E. B sits opposite to A. D sits second to the right of B. G is not an immediate neighbor of E. H is the daughter of G. F is the brother of A. Who is the mother of G?
- A.Cannot be determinedCorrect
- B.B
- C.C
- D.D
Solution
Based on the information provided, we know A is the father of G and B sits opposite to A. We don't have any direct information about who the mother of G is. Therefore, the answer is 'Cannot be determined'.
Given the family relationships: P is the father of Q. Q is the son of R. R is the mother of S. T is the son of P. Which of the following statements is definitely true?
- A.Q and T are brothersCorrect
- B.R is the daughter of P
- C.S is the granddaughter of P
- D.T is the brother-in-law of R
Solution
P is the father of Q, Q is the son of R, meaning P and R are the parents of Q. R is the mother of S, which means S and Q are siblings. T is the son of P. Therefore, Q and T are brothers. All other options cannot be definitively determined from the given information.
Looking at the portrait of a man, Hari said, 'His mother is the wife of my father's son. I have no brothers or sisters.' Whose portrait was Hari looking at?
- A.His sonCorrect
- B.His cousin
- C.His nephew
- D.His father
Solution
Hari has no brothers or sisters. So 'my father's son' = Hari himself. The wife of Hari = Hari's wife. The mother of the man in the portrait = Hari's wife. So the man in the portrait is Hari's son.
Introducing a lady, a man said: 'Her mother is the only daughter of my mother-in-law' (SSC Chain 2). How is the man related to the lady?
- A.FatherCorrect
- B.Brother
- C.Uncle
- D.Husband
Solution
My mother-in-law's only daughter is my wife. The lady's mother is my wife. Therefore, the man is the father of the lady.
If 'A * B' means 'A is the father of B', 'A + B' means 'A is the daughter of B', 'A / B' means 'A is the mother of B', then what does 'P + Q / R * S' mean?
- A.P is the granddaughter of SCorrect
- B.P is the grandson of S
- C.P is the daughter of S
- D.P is the son of S
Solution
P + Q means P is the daughter of Q. Q / R means Q is the mother of R. R * S means R is the father of S. Thus, P is the daughter of Q, who is the mother of R, who is the father of S. Therefore, P is the granddaughter of S.
Blood Relations — Frequently Asked Questions
What is the standard method for blood relation questions?
Draw a family tree as you read — squares for males, circles for females, vertical lines for generations. Solving in your head fails exactly when the question is worth solving.
What is the most common trap in these questions?
Assuming gender. "Child of", "sibling of" and names do not reveal gender — if the final relationship depends on an unknown gender, the answer is "cannot be determined".
How many Blood Relations practice questions does Parikshala have for SSC CPO?
73 exam-pattern Blood Relations questions for SSC CPO Reasoning, each with a step-by-step solution. Practice is free — no sign-up needed to start.