📘 Topic: Blood Relation
✅ Basic Concepts
• Father’s son → Brother
• Father’s daughter → Sister
• Mother’s brother → Maternal Uncle
• Father’s brother → Paternal Uncle
• Sister’s son → Nephew
• Brother’s daughter → Niece
• Husband’s sister → Sister-in-law
• Wife’s brother → Brother-in-law
• Son’s wife → Daughter-in-law
• Daughter’s husband → Son-in-law
• Grandfather = Father’s or Mother’s father
• Grandmother = Father’s or Mother’s mother
• Great-grandfather = Father of Grandfather
• Use "+" for male, "−" for female in diagrammatic questions
⚡ Tricks & Tips
• Use family tree diagrams to decode puzzles.
• Use symbols (+ for male, – for female).
• Start decoding from the last person mentioned.
• Practice gender inference from relations (e.g., “mother of” = female).
• Identify if the question is code-based, puzzle-based, or direct.
• Keep track of generations (same, one above, or one below).
📝 30 Practice Questions on Blood Relation
Q1. A is the father of B. B is the brother of C. How is A related to C?
A is the father of C.
Q2. P is the son of Q. Q is the daughter of R. How is R related to P?
R is P’s grandmother or grandfather (gender not clear).
Q3. X is the brother of Y. Y is the sister of Z. How is X related to Z?
X is the brother of Z.
Q4. A is the mother of B. B is the father of C. How is A related to C?
A is the grandmother of C.
Q5. A is B’s brother. C is B’s mother. D is C’s father. E is D’s mother. How is E related to
A?
E is A’s great grandmother.
Q6. P is the sister of Q. Q is the father of R. How is P related to R?
P is R’s aunt.
Q7. X is the daughter of Y. Y is the son of Z. How is Z related to X?
Z is X’s grandfather.
Q8. A is the son of B. B is the daughter of C. How is A related to C?
A is the grandson of C.
Q9. D is the brother of E. E is the mother of F. How is D related to F?
D is F’s maternal uncle.
Q10. A is the daughter of B. C is B’s sister. How is C related to A?
C is A’s aunt.
Q11. Pointing to a boy, Ram said, “He is the son of my mother’s only son.” Who is the
boy?
Ram’s son.
Q12. If A + B means A is the mother of B; A − B means A is the brother of B, then what
does A + B − C mean?
A is mother of B, B is brother of C → A is C’s mother.
Q13. If A × B means A is the father of B; A ÷ B means A is the sister of B, then A × B ÷ C?
A is father of B, B is sister of C → A is uncle of C.
Q14. If X is Y’s brother, Y is Z’s mother, then how is X related to Z?
X is Z’s maternal uncle.
Q15. A is son of C; C is husband of D; D is mother of B. How is A related to B?
A is B’s brother.
Q16. A is the daughter of B, who is the brother of C. How is C related to A?
C is A’s uncle or aunt.
Q17. P is father of Q; Q is father of R. How is P related to R?
P is grandfather of R.
Q18. A is B’s son; C is B’s mother. How is C related to A?
C is A’s grandmother.
Q19. A is sister of B; B is father of C. How is A related to C?
A is C’s aunt.
Q20. If A is the brother of B and B is the sister of C, how is A related to C?
A is the brother of C.
Q21. P is the daughter of Q; Q is the wife of R. How is R related to P?
R is P’s father.
Q22. A is the uncle of B, B is the father of C. How is A related to C?
A is C’s great uncle.
Q23. M is N’s brother; N is O’s father. How is M related to O?
M is O’s uncle.
Q24. A is daughter of B; B is son of C. How is A related to C?
A is C’s granddaughter.
Q25. A is mother of B; B is brother of C. How is A related to C?
A is mother of C.
Q26. A is the sister of B; B is married to C; C is the mother of D. How is A related to D?
A is D’s aunt.
Q27. A is the only son of B. C is B’s father. How is A related to C?
A is C’s grandson.
Q28. A is son of B. B is daughter of C. C is mother of D. How is A related to D?
A is D’s nephew.
Q29. A is B’s brother; C is B’s mother. How is A related to C?
A is C’s son.
Q30. A is the son of B. B is the brother of C. C is the daughter of D. How is A related to D?
A is D’s grandson.
