Reasoning – Blood Relation
What is Blood Relation?
These problems are based on family relationships. They test your logical understanding of kinship and hierarchical relationships.
Types of Blood Relation Questions
1. Descriptive: A long statement is given and you have to deduce relation.
2. Dialogue-based: 'Person A says...' format.
3. Symbol-based: Relationships expressed with symbols like + for father, − for sister, etc.
Example Questions
- A is B’s brother, B is C’s father. How is A related to C?
Answer: Uncle
- X + Y means X is father of Y; X − Y means X is sister of Y. What does P − Q + R mean?
Answer: P is aunt of R
Exam Tips
- Draw a family tree diagram or symbol chain for clarity.
- Mark genders clearly if mentioned.
- Follow generation hierarchy: grandparent → parent → child.
- Watch for indirect clues—‘only son’, ‘daughter of the father’s brother’, etc.
Common Mistakes
- Assuming gender when not given.
- Confusing maternal and paternal relationships.
- Reading direction of relation wrongly (A is B’s uncle ≠ B is A’s uncle).
Quick Revision Checklist
- Memorize basic relationships and their chains (uncle, cousin, niece).
- Practice symbol and coded format questions.
- Visualize relationships or use rough diagrams.
- Use table-based deduction for complex chains.
Summary: Blood relation questions measure your grasp of family logic. Clear visualization and careful reading of relational cues are key to solving them quickly and accurately.