Syllogism exercise based on Venn Diagrams

Syllogism Exercise and Basic Questions- Venn Diagrams

Introduction to Syllogism: The syllogism is a part of Logical Reasoning in which a conclusion is drawn from two or more given statements. It is important from exam point of view as it is asked in various competitive examinations like IBPS, SBI, UPSC, SSC, Railways etc. The questions asked here contain two or more statements and these statements are followed by two or more conclusions. It is not necessary that the statements given will be true in context with the real world. Also, The statements don’t have any co-relation with the commonly known facts.

You have to determine which of the conclusions logically follow from the given statements. You can take help of Venn Diagrams to do such questions.Hence, You have to draw all the possible diagrams and then have to determine the solution from these diagrams.




Before moving to questions, you have to understand some basics of Syllogism and Venn Diagrams.

There are some Basic Diagrams for some particular statements in Syllogism.

Let’s take a look:

All A are B

Syllogism Questions prepskool

Whole A lies in B

All B are A

Syllogism Questions prepskool

Whole B lies in A

Some A are B

Syllogism Questions prepskool

Some part of A lies in B.

Some B are A

Syllogism Questions Prepskool

Some part of B lies in A.

No A is B

Syllogism Questions Prepskool

No portion of A lies in B.

No B is A

Syllogism Questions Prepskool

No portion of B lies in A.




Let’s Understand this concept with a Basic Syllogism Exercise

Directions:

In each of the questions below are given three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Your answer should be:

(1) if only Conclusion I follows
(2) if only Conclusion II follows
           (3) if either Conclusion I or II follows
               (4) if neither Conclusion I nor II follows
             (5) if both Conclusions I and II follows

Q1. Statements:

  1. Some pearls are stones.
  2. All stones are bricks.
  3. All bricks are walls.
    Conclusions:
    I. Some pearls are bricks.
    II. Some pearls are walls.

Q2. Statements:

  1. All books are magazines.
  2. Some magazines are notebooks.
  3. Some notebooks are papers.
    Conclusions:
    I. Some books are notebooks.
    II. Some magazines are papers.





Q3. Statements:

  1. All mobiles are phones.
  2. All phones are computers.
  3. All computers are scanners.
    Conclusions:
    I. All mobile are computers.
    II. All phones are scanners.

Q4. Statements:

  1. All cars are buses.
  2. Some buses are scooters.
  3. No scooter is a train
    Conclusions:
    I. No bus is a train.
    II. Some buses are trains.

Q5. Statements:

  1. Some chairs are wheels.
  2. Some wheels are sofa sets.
  3. All sofa sets are cupboards.
    Conclusions:
    I. Some wheels are cupboards.
    II. Some chairs are sofa sets.





Q6. Statements:

  1. Some boxes are bags.
  2. All bags are trunks.
  3. All trunks are drawers.
    Conclusions:
    I. All bags are drawers.
    II. All trunks are bags.

Q7. Statements:

  1. Some coins are notes.
  2. All notes are cards.
  3. All cards are plastics.
    Conclusions:
    I. Some coins are cards.
    II. All notes are plastics.





Q8. Statements:

  1. Some apples are oranges.
  2. Some oranges are grapes.
  3. All grapes are bananas.
    Conclusions:
    I. Some apples are bananas.
    II. Some oranges are bananas.




Here are the Answers to above Syllogism Questions:

Q1(5)

Syllogism Questions prepskool

Q2(4)

 Syllogism Questions Prepskool

Q3(5)

 

Q4(3)

 

Q5(1)

 

Q6(1)

 

Q7(5)

 

Q8(2)

 


If you have any doubts or queries , you can ask in comments below.

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