Patwari Exam · Reasoning
Blood Relations in Reasoning
This note explains generations, family relationships, and coded blood-relation questions with examples.
- Reasoning & Numerical Ability
- 5 min read
Verified 6 October 2026
Key Formulas & Methods
- Generation above
- Generation above: father, mother, grandfather, maternal grandfather → upper generation.
- Generation below
- Generation below: son, daughter, grandson (via son), grandson (via daughter) → lower generation.
- Same generation
- Same generation: brother, sister, uncle (father's brother), uncle (mother's brother).
- Grandfather example
- "A's father's father" = A's grandfather.
- Cousin example
- "B's mother's sister's son" = B's cousin.
- Coded blood-relation symbols
- Coded-symbol questions: P+Q means P is Q's mother; P-Q means P is Q's father → solve using the formula.
- Exam tip
- Exam tip: draw a family tree; mark male/female separately.
Frequently Asked Questions
What is the best method for solving blood relation questions?+
Draw a family tree and mark male/female separately while adding each relationship one by one.
What is the relationship in "A's father's father"?+
"A's father's father" means A's grandfather, since this is a relationship in the generation above.
How do you solve coded-symbol blood relation questions?+
P+Q means P is Q's mother and P-Q means P is Q's father; understand such formulas first, then solve the question.