Syllogism – Direct Rules and No Diagram Tricks
Solve syllogism questions quickly using direct rules without drawing diagrams.
Basic Statements
- All A are B
- Some A are B
- No A is B
- Some A are not B
Important Rules
- All + All → All
- Some + All → Some
- No + All → Some not
- Some not is always possible
Direct Conclusion Trick
Example:
All A are B
All B are C
Conclusion:
All A are C
Possibility Trick
If definite conclusion is not possible, check for “possibility”.
Exam Level Questions
1. All cats are dogs, all dogs are animals → conclusion?
Answer: All cats are animals
2. Some A are B, all B are C → conclusion?
Answer: Some A are C
3. No A is B, all B are C → conclusion?
Answer: Some A are not C (possible)
Common Mistake
Students try drawing Venn diagrams for every question, wasting time.
Speed Tip
Memorize direct rules — most questions can be solved without diagrams.
Shaktimatha Learning
Reasoning Speed • Bank Exam Preparation
Reasoning Speed • Bank Exam Preparation
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