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# Syllogism Tricks

Ashish Vastri
06/02/2017 0 0

Syllogism Tricks

Syllogism is a major part of reasoning in various competetive exams. It's simple but brain teaser too. Most of the students find it difficult to learn the concepts of venn diagram and apply accurately to questions.

I would try to help you all with some useful concepts and tricks that you may apply in competitive exams.

All of these tricks will surely help you in Banking, Railways, SSC, NDA, MBA and many other exams.

All + All = All

All + No = No

All + Some = No conclusion

Some + All = Some

Some + No = Some not

Some + Some = No conclusion

No + All = Some not (Reversed)

No + Some = Some not (Reversed )

No + No = No conclusion

Note:

Some not/ Some Not Reversed + Anything = No conclusion

To solve syllogism questions you may take help of two types of cancellation :

• Cross Cancellation
• Vertical Cancellation

Cross Cancellation

STATEMENTS

1.  All pens are Erasers
2. All Erasers are Books
3. No book is Table

CONCLUSIONS

1. No Eraser is table

All + No = No

All Erasers are books

No book is a Table

If we will cross cancel books, we get

CONCLUSION:    No Eraser is table .

Hence conclusion follows

Vertical Cancellation

STATEMENTS

1. Some apples are fruits
2. All bananas are fruits

CONCLUSION

1. No banana is apple

All + Some = No conclusion

Some apples are fruits

All bananas are fruits

Here we can cancel fruits vertically but the direction of adding will get Reversed , i.e. Conclusion will be ALL + Some = No  conclusion

Hence, Conclusion 1 doesn't follow.

There are more key points regarding Syllogism which I will post in next lesson.

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