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Syllogism Tricks

Syllogism Tips & Tricks:




The syllogism is a form of reasoning in which conclusion should be drawn from two or three statements and it can be called as deductive reasoning.The conclusion drawn from the given statements establishes the relation between the terms on the basis of all the given statements to the concluded statements.

Syllogism can be solved by using two methods:

  • Venn Diagram Method
  • Subject & Predicate Derivation Method

Venn Diagram Method:

First of all, Learn how to draw Venn diagrams for different type of statements.

Eg 1: Some girls are singers

Eg: All girls are singers

Eg: No girl is singer

The process of solving syllogism in Exam to complete in less time.
Syllogism Question 1:
Statements: Some Carrots are Brinjals
Some Brinjals are Apples
All Apples are Bananas.
Conclusions : I. Some Apples are Carrots
II. Some Bananas are Brinjals
III. Some Bananas are Carrots.

  1. Only I follows
  2. Only II follows
  3. Only III follows
  4. Only Either II or III follows
  5. None of these

Solution:
Solve the above statements with Venn diagram method.
Draw Venn diagram for each statement separately and then combine for all three statements diagrams into one and analyze conclusions which are satisfying as per diagram.




Question 2:
Statements: All chillies are garlic.
Some garlic is onions.
All onions are potatoes.
No potato is ginger.

Conclusions: I. No onion is ginger
II. Some garlic is potatoes
III. Some chillies are potatoes

  1. Only I follows
  2. Only II follows
  3. Only I and II follows (Ans)
  4. Only Either II or III follows
  5. None of these





Question 3:
Statements: Some girls are singers.

Somesingers are tall.
All tall are foreigners.
All foreigners are fair.

Conclusions: I.Some singers are foreigners./span>
II. Some fair are tall.
III. All tall are fair.

  1. Only I & Either II or III follows
  2. Only I & II follows
  3. Only II and III follows (Ans)
  4. All follows (Ans.)

 

Question 4:
Statements: Some Windows are Doors
All Doors are Walls.
No Wall is Roof.
All roofs are shelters.

Conclusions: I. Some Windows are Walls
II. No Wall is Shelter.
III. No Door is Shelter.

  1. None follows
  2. Only I and II follows
  3. Only I and III follows (Ans)
  4. Only Either II or III follows
  5. Only I follows

Question 5:

Statements: All bottles are jars.

Some jars are pots.

All pots are delicate.

No delicate is a tank.

Conclusions: I. No pot is a tank.
II. Some jars are tanks.
III. Some bottles are pots.

  1. Only I and II follows (Ans)
  2. Only I follows
  3. Only II follows
  4. Only Either II or III follows
  5. None of these.

 

Question 6 :

Statements : Some birds are ducks.

Some ducks are small.

No small is the swan.

All swan are nice.

Conclusions: I. No small is nice.
II. Some small are birds.
III. Some birds are nice.

  1. Only I and II follows.
  2. Only I follows.
  3. Only II follows.
  4. Only Either II or III follows.
  5. None follows (Ans.)

 

Question 7:
There are four statements followed by 2 conclusions I and II. You have to decide which of the given conclusions logically follows from the given 4 statements.

Give answer (1) If only I conclusion follows
(2) If only II conclusion follows
(3) If Either I or II follows
(4) If Neither I nor II conclusion follows
(5) If Both Conclusions I and II follows

Q.7. Statements : Some pans are bowls
All bowls are vessels
All steel are vessels
No vessel is copper

Q.1.) Conclusions: I. No copper is a bowl
II. Some pans are vessels

Answer : (5) Both I and II follows
Q.2.) Conclusions : I. No pan is copper
II. No steel is copper

Answer: (2) Only II follows.

Q.1.) Conclusions: I. All vessels are steel
II. Some bowls are copper

Answer : (4) Neither I nor II follows.

Note : We have to check all the possible diagrams and check whether the given conclusion satisfies all the diagrams.If it is true in all finally it is true and if it is not satisfies one condition finally it is false.

Q.8. Statements: All rings are gold
All chains are rings
All round are rings
All gold are ornaments

Q.8.1.) Conclusions: I. Some round are not ornaments.
II. No chain is round.

Answer: (4) Neither I nor II follows

Q.8.2.) Conclusions: I. All rings are ornaments.
II. Some gold does not chain.

Answer : (1) Only I follows

Example Question 9: Read both the conclusions and then decide which of the given conclusions logically follows from the given statements.

Choose the correct option from the given answers:

9.1.)Statements: All parrots are birds

No bird is an animal

All animals are mammals

9.1.1)Conclusions :

I. At least, some birds are mammals
II. All mammals being birds is a possibility.

(1) Only II follows
(2)Only I follows
(3) Either I or II follows
(4) Neither I nor II follows
(5) None of these

9.1.2)Conclusions :

I. No parrot is an animal
II. All parrots being mammal is a possibility

(1) Only II follows
(2)Only I follows
(3) Either I or II follows
(4) Neither I nor II follows
(5) None of these