Logical Reasoning

Blood Relations

Determine family relationships

Blood Relations questions test your ability to determine family relationships from given information. This is a consistently high-scoring topic in reasoning.

What is Blood Relations?

Blood Relations questions describe family relationships between people using direct statements or coded/symbolic representations. You must decode these to identify specific relationships between family members.

Why is it Important?

Blood Relations appears in almost every competitive exam and is considered a must-score topic. With proper family tree technique, these can be solved quickly and accurately.

Key Techniques

Draw a family tree diagram for every question
Use standard symbols: + for male, - for female
Horizontal lines for same generation, vertical for parent-child
Work from the most definitive relationship first
Cross-reference all clues to verify your tree

Common Patterns

•Direct statement problems

•Coded relationship problems (A+B means A is father of B)

•Mixed blood relation and direction problems

•Generational puzzles

💡 Pro Tips

1.Always draw the family tree — it prevents errors

2.Start with the person whose relationship is most clearly stated

3.Be careful with gender — "parent's only child" means the person themselves

📋 Exams Where Asked

IBPS PO/ClerkSBI PO/ClerkSSC CGLRRB NTPCUPSC CSATCAT

Frequently Asked Questions

What symbols should I use for blood relation diagrams?

Use squares for males, circles for females. Horizontal lines connect couples, vertical lines connect parents to children. Use dashed lines for uncertain relationships.

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