Blood Relations

1. What are Blood Relations?

Blood Relations are logical reasoning questions that test your ability to identify family relationships between different people based on given information. These questions measure your analytical thinking and relationship mapping skills.

Family Relationship Mapping

Logical Deduction

Generation Analysis

Puzzle Solving

Simple Definition: Blood Relations involve identifying family connections and determining relationships between different family members.

2. Types of Blood Relations

Major Categories of Blood Relations

Based on Complexity

Simple Family Relations

Direct family relationships

Coded Relations

Symbol-based relationships

Generation Puzzles

Multi-generation family trees

Based on Approach

Direct Questions

Straightforward relationship finding

Pointing/Introduction Based

"Pointing to a person" type questions

Mixed Blood Relations

Combination with other reasoning types

3. Basic Family Relations

Must-Know Family Relationships

Parents

Father, Mother

Siblings

Brother, Sister

Grandparents

Grandfather, Grandmother

Uncle/Aunt

Father/Mother's siblings

Family Relationship Chart

Relationship	Male	Female	Children
Parents	Father	Mother	Son/Daughter
Grandparents	Grandfather	Grandmother	Grandson/Granddaughter
Siblings	Brother	Sister	-
Uncle/Aunt	Uncle	Aunt	Nephew/Niece
In-Laws	Father-in-law, Brother-in-law	Mother-in-law, Sister-in-law	Son-in-law, Daughter-in-law

4. Coded Blood Relations

Common Coding Patterns

Symbol Coding

+ = brother, - = sister

Mathematical Coding

A×B = A is brother of B

Letter Coding

F = Father, M = Mother

Mixed Coding

Combination of patterns

Coded Relations Examples

Code	Meaning	Example	Interpretation
A + B	A is brother of B	X + Y	X is brother of Y
A - B	A is sister of B	P - Q	P is sister of Q
A × B	A is father of B	M × N	M is father of N
A ÷ B	A is mother of B	C ÷ D	C is mother of D

5. Generation-based Puzzles

Multi-Generation Family Structures

1

3-Generation Puzzles

Grandparents, Parents, Children

2

4-Generation Puzzles

Great-grandparents to Great-grandchildren

3

Mixed Generation

Combination of different generation types

4

Complex Relationships

In-laws, step-relations, adopted children

Generation Puzzle Examples

Puzzle Type	Given Information	Question	Solution Approach
3-Generation	A is B's father. B is C's mother.	How is A related to C?	A is grandfather of C
Mixed Generation	P is Q's brother. Q is R's father.	How is P related to R?	P is uncle of R
Complex	X is Y's husband. Y is Z's sister.	How is X related to Z?	X is brother-in-law of Z
Multi-level	M is N's grandfather. N is O's mother.	How is M related to O?	M is great-grandfather of O

6. Family Tree Construction

Building Family Trees

Basic Symbols

□ = Male

Square represents male members

○ = Female

Circle represents female members

| = Parent-Child

Vertical line shows parent-child relationship

Relationship Lines

--- = Sibling

Horizontal line connects siblings

= = Marriage

Double line shows marriage relationship

+ = Generation

Plus indicates same generation level

Always start with the person whose relationship is clearly defined and build the tree step by step!

7. How to Solve Blood Relation Questions

Step-by-Step Approach:

1

Read Carefully

Understand all given relationships

2

Identify Gender

Note male/female relationships clearly

3

Draw Family Tree

Create visual representation

4

Trace Relationships

Follow the tree to find connections

Always verify your answer by tracing back through the family tree to ensure accuracy!

8. Common Delhi Police / SSC Exam Facts

Simple Relations → Most Common

Coded Relations → Frequent

Time Limit → 60-90 seconds per question

Family Tree → Key Solving Technique

Practice → Essential for Accuracy

Generation Puzzles → Higher Difficulty

9. Quick Recap

Relation Type	Key Focus	Common Patterns
Simple Relations	Direct Family Connections	Parent-Child, Siblings, Grandparents
Coded Relations	Symbol-based Relationships	Symbol coding, Mathematical operations
Generation Puzzles	Multi-level Family Trees	3-4 generation structures, Complex relationships
Family Tree	Visual Representation	Symbols for genders, Lines for relationships

You've completed Blood Relations!

Courage Tip: Remember to always draw family trees for complex relationships, pay attention to gender-specific terms, and practice different types of blood relation questions to improve your speed and accuracy in exams.