👨👩👧👦 Blood Relations – Logical Reasoning
✅ What are Blood Relation Questions?
Blood relation questions involve identifying relationships between family members based on given information. You may be asked to determine how two people are related, based on a set of conditions.
🎯 Why It’s Important
- Tests your ability to comprehend and interpret family hierarchies.
- Sharpens attention to detail.
- Strengthens logic building.
- Common in aptitude tests, interviews, and entrance exams.
🧬 Types of Relationships
- 🧔 Generation I: Father, Mother, Uncle, Aunt
- 👨 Generation II: Brother, Sister, Cousins
- 👶 Generation III: Son, Daughter, Nephew, Niece
- 💑 By Marriage: Husband, Wife, Brother-in-law, Sister-in-law, Son-in-law, Daughter-in-law, Father-in-law, Mother-in-law
📚 Common Relationship Terms
| Term | Meaning |
|---|---|
| Maternal | Mother’s side |
| Paternal | Father’s side |
| Sibling | Brother or sister |
| In-law | Through marriage |
| Cousin | Child of uncle/aunt |
| Uncle | Brother of father or mother |
| Aunt | Sister of father or mother |
🧩 Types of Blood Relation Questions
1. Direct Statement-based
Example:
Ram is the brother of Sita.
Sita is the daughter of Radha.
👉 What is Ram’s relation to Radha?
✅ Answer: Son
2. Puzzle/Chain-based
Example:
A is the father of B.
B is the sister of C.
C is the mother of D.
👉 How is A related to D?
✅ A is grandfather of D.
3. Coded/Symbol-based
Example:
A + B means A is the brother of B
A × B means A is the mother of B
A - B means A is the sister of B
👉 Q × R + S
= Q is mother of R
→ R is brother of S
👉 So, Q is mother of R and grandmother of S
✅ Q is grandmother of S.
4. Dialogue/Narrative-based
Example:
Pointing to a man, Rita said, “He is the only son of my mother’s husband.”
👉 Rita's mother's husband = father
👉 Only son of her father = Rita's brother
✅ Answer: Brother
5. Mixed Gender + Levels
Example:
A is the daughter of B.
B is the son of C.
C is the husband of D.
E is the father of D.
👉 How is E related to A?
✅ D is A’s grandmother, so E is great-grandfather.
📝 Symbols You Can Use While Solving
To save time, use shorthand symbols like:
| Symbol | Meaning |
|---|---|
| ♂️ | Male |
| ♀️ | Female |
| ↑ | Parent |
| ↓ | Child |
| ↔ | Siblings |
| = | Spouse |
🧠 Approach to Solve Blood Relation Questions
✨ Step-by-Step Method:
- Read carefully.
- Focus on each relationship mentioned.
- Note gender.
- Identify if male/female (sometimes it's not clear directly).
- Draw family trees or diagrams.
- This avoids confusion, especially with complex chains.
- Work bottom-up if needed.
- Start from the known person and trace the relationship.
🎨 Example with Diagram
Q:
A is the brother of B
B is the daughter of C
C is the wife of D
👉 Find A’s relation to D.
Step-by-step:
A (♂️) and B (♀️) are siblings.
B is daughter of C (♀️)
C is wife of D (♂️)
So:
→ D is father of B → and of A
✅ A is son of D.
🧪 Practice Question Set
Q1:
Pointing to a woman, Raj said, “She is the daughter of my grandfather’s only son.”
👉 Who is the woman to Raj?
✅ Grandfather’s only son = Raj’s father
→ Daughter of Raj’s father = Sister
Q2:
A is the brother of B. C is the father of A. D is the sister of C.
👉 How is D related to B?
✅ D is father’s sister = Aunt
Q3 (Coded):
If A + B means A is the brother of B,
A × B means A is the father of B,
A ÷ B means A is the sister of B.
Then what does P × Q ÷ R mean?
✅ P is father of Q, Q is sister of R → P is father of both Q and R
🧠 Tips and Tricks
| Tip | Benefit |
|---|---|
| 🔄 Always go slow on gender | To avoid confusion |
| 🖊️ Use tree diagrams | Visual clarity |
| 🔁 Reverse relationships | Helps if asked from another’s point of view |
| 📋 Learn common relations | Save time |
| 🚻 Practice gender-neutral clues | They're trickier |
🔚 Conclusion
Blood relation questions test how well you:
- Understand relationships
- Analyze multi-step clues
- Think logically and clearly
🧠 With practice and structured thinking, these become very easy and even fun!