Syllogism Questions and Answers : Logical Reasoning

1.

Statements: 
Some parrots are sparrows 
Some sparrows are  crows 
Some crows are red
Conclusion: 
1. Some parrots are red 
2. No sparrow is red 
3. No parrot is red 
4. Some sparrows are red

   A.) Either 2 or 4
   B.) Only 1 and 2 follow
   C.) Either 1 or 3 and either 2 or 4
   D.) Either 1 or 3

Answer: Option 'C'

Either 1 or 3 and either 2 or 4

2.

Statements:
No mat is pot
All pots are bats
Conclusion:
1. No mats are bats
2. No bats are mats
3. Some bats are mats
4. Some bats are not mats

   A.) 1
   B.) 2
   C.) 3
   D.) 4

Answer: Option 'D'

Some bats are not mats

3.

Statements:
Some fruits are mangos.
All mangos are guavas.
No guava is a banana.
Conclusions:
I. All guavas are fruits.
II. Some guavas are fruits

   A.) If only conclusion I follows.
   B.) If only conclusion II follows.
   C.) If either conclusion I or conclusion II follows.
   D.) If both conclusions I and II follows.

Answer: Option 'B'

(i)  All pages are markers     --> Universal Affirmative (A - type).
(ii) Some fruits are apples    --> Particular Affirmative (I - type)
(iii)No book is a page         --> Universal Negative (E - type).
(iv) Some books are  not pages --> Particular Negative (O - type).

Some fruits are mangos.
All mangos are guavas.
I + A => I - type of conclusion
"Some fruits are guavas".
Conclusion II is Converse of it.
All mangos are guavas
No guava is a banana.
A + E => E - type of conclusion
"No mango is a banana

4.

Statements :
All papers are bottles.
All bottles are cups.
Some cups are jugs.
Some jugs are plates.
Conclusions :
I. Some plates are cups.
II. Some plates are bottles.
III. Some cups are papers.
IV. Some bottles are papers.

   A.) Only III and IV follows
   B.) Only I and II follows
   C.) Only I and III follows
   D.) Only II and IV follows

Answer: Option 'A'

All papers are bottles.
 All bottles are cups.

 A + A => A - type of Conclusion
 "All papers are cups."
 Conclusion III is Converse of it.
 Conclusion IV is Converse of the first Premise.

5.

Statements: 
All phones are radios
No radio is a T.V 
All radios are computers
Conclusion: 
1. No phone is a T.V 
2. No computer is a T.V 
3. Some computers are T.V 
4. All radios are phones

   A.) None follows
   B.) Only 1 follows
   C.) Only 1 and 3 follows
   D.) Only 2 follows

Answer: Option 'B'

Only 1 follows

6.

Statements: 
Some bidrs are nightigales 
Many birds sing
Conclusion: 
1. Many nightigales sing 
2. No bird is a nightigales 
3. Some birds sing 
4. 1,2,3 are all incorrect

   A.) None follows
   B.) Only 3 follows
   C.) Only 2 and 4 follows
   D.) Only 2 and 3 follows

Answer: Option 'B'

Only 3 follows

  • (Q. 1 - 5) : In each of the questions below are given two or more 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 a 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.

7.

Statements:
No giraffe is a leopard
All leopards are kangaroos
All kangaroos are wolfs
Conclusions:
I. All kangaroos can never be giraffes
II. All giraffes are definitely wolfs.

   A.) If only conclusion I follows.
   B.) If only conclusion II follows.
   C.) If either conclusion I or conclusion II follows.
   D.) If both conclusions I and II follows.

Answer: Option 'A'

(i)  All pages are markers     --> Universal Affirmative (A - type).
(ii) Some fruits are apples    --> Particular Affirmative (I - type)
(iii)No book is a page         --> Universal Negative (E - type).
(iv) Some books are  not pages --> Particular Negative (O - type).

No giraffe is a leopard
All leopards are kangaroos

E + A ⇒ O1 - type of Conclusion " Some kangaroos are not giraffes."
This Conclusion implies that "All kangaroos can never be giraffes."
All leopards are wolfs.
All kangaroos are wolfs

A + A ⇒ A - type of conclusion " All leopards are wolfs."

8.

Statements: 
All locks are keys.
Some keys are pockets.
Conclusions:
I. No pocket is lock.
II. At least some pockets are keys.

   A.) If only conclusion I follows.
   B.) If only conclusion II follows.
   C.) If either conclusion I or conclusion II follows.
   D.) If both conclusions I and II follows.

Answer: Option 'B'

(i)  All pages are markers     --> Universal Affirmative (A - type).
(ii) Some fruits are apples    --> Particular Affirmative (I - type)
(iii)No book is a page         --> Universal Negative (E - type).
(iv) Some books are  not pages --> Particular Negative (O - type).

All locks are keys
Some keys are pockets.
A + I => No conclusion
Conclusion II is Converse of the second Premise.

9.

Statements:
Some fruits are mangos.
All mangos are guavas.
No guava is a banana.
Conclusions:
I. All fruits are bananas.
II. No mango is a banana.

   A.) If only conclusion I follows.
   B.) If only conclusion II follows.
   C.) If either conclusion I or conclusion II follows.
   D.) If both conclusions I and II follows.

Answer: Option 'B'

(i)  All pages are markers     --> Universal Affirmative (A - type).
(ii) Some fruits are apples    --> Particular Affirmative (I - type)
(iii)No book is a page         --> Universal Negative (E - type).
(iv) Some books are  not pages --> Particular Negative (O - type).
All mangos are guavas.
No guava is a banana

A + E => E - type of Conclusion
"No mango is a banana."
This is Conclusion II.

10.

Statements: 
All dogs are cows 
No cows are cats
Conclusion: 
1. No dogs are cats 
2. All dogs are cats 
3. Some dogs are cats 
4. None of these

   A.) Only 1 follows
   B.) Only 1 and 2 follow
   C.) Only 1 and either 2 or 4 follow
   D.) Only 3 follows

Answer: Option 'A'

Only 1 follows

11.

Statements: 
All pens are books  
All books are computers
Conclusion: 
1. All pens are computers 
2. Some pens are computers 
3. Both 1 and 2 
4. None of these

   A.) Only 1 follows
   B.) Only 1 and 2 follow
   C.) Only 1 and either 2 or 4 follow
   D.) Only either 2 or 4 follows

Answer: Option 'B'

Only 1 and 2 follow

12.

Statements:
Some tables are trees
Some trees are flowers
All flowers are jungles
Conclusion:
1. Some jungles are tables
2. Some trees are jungles
3. Some flowers are tables
4. All jungles are flowers

   A.) Only 2 follows
   B.) Only 1 and 2 follows
   C.) Only 3 follows
   D.) None of these

Answer: Option 'A'

Only 2 follows

13.

Statements: 
Some roads are ponds 
All ponds are stores 
Some stores are bags
Conclusion: 
Some bags are ponds 
Some stores are roads

   A.) If only conclusion 1 follows
   B.) If only conclusion 2 follows
   C.) If either conclusion 1 or 2 follows
   D.) If both conclusions 1 and 2 follows

Answer: Option 'D'

If both conclusions 1 and 2 follows

14.

Statements: 
Some books are pens 
Some pens are pencils
Conclusion: 
1. Some books are pencils  
2. No book is pencil 
3. All pencils are pens 
4. All pens are books

   A.) Only 1 follows
   B.) Either 1 or 2 follow
   C.) Only 1 and either 2 or 4 follow
   D.) Only 4 follows

Answer: Option 'B'

Either 1 or 2 follow

15.

Statements:  
All boys are girls  
Some girls are students 
All students are healthy.
Conclusion: 
1. Some healthy people are boys 
2. Some healthy people are girls  
3. Some students are boys 
4. No healyh people are boys

   A.) None follows
   B.) Only either 1 or 4 follows
   C.) Only either 1 or 4 and 2 follow
   D.) Only either 1 or 4 and 3 follow

Answer: Option 'C'

Only either 1 or 4 and 2 follow

16.

Statements: 
Some parrots are sparrows 
All sparrows are  crows
Conclusion: 
1. All crows are sparrows 
2. All doors are crows 
3. Some parrots are crows 
4. Some sparrows are crows

   A.) None follow
   B.) Only 1 and 2 follow
   C.) Only 2 and 3 follow
   D.) Only 4 follow

Answer: Option 'D'

Only 4 follow

17.

Statements: 
Some sweets are chocolates 
Some chocolates are mints 
Some mints are food 
Some food is diet.
Conclusion: 
1. No sweets are diet 
2. No food is chocolates 
3. Some sweets are diet 
4. Some sweets are food

   A.) None follows
   B.) Only 1 and 3 follows
   C.) Only 2 and 4 follows
   D.) Only 2 and 3 follows

Answer: Option 'B'

Only 1 and 3 follows

18.

Statements: 
No rats are cats  
All cats are tigers
Concussion: 
1. No rats are tigers 
2. No tigers are rats 
3. Some tigers are rats 
4. Some tigers are not rats

   A.) Only 1 and 2 follows
   B.) Only 1,2 and 3 follows
   C.) Only either 1 or 3 and 2 follows
   D.) Only 4 follows

Answer: Option 'D'

Only 4 follows

19.

Statements: 
Some roses are flowers  
Some flowers are buds 
All buds are leaves 
All leaves are plants
Conclusion: 
1. Some plants are flowers 
2. Some roses are buds 
3. No leaves are roses 
4. No roses are buds

   A.) Only 1 follows
   B.) Only 1 and 2 follow
   C.) Only 1 and either 2 or 4 follow
   D.) Only either 2 or 4 follows

Answer: Option 'C'

Only 1 and either 2 or 4 follow

20.

Statements: 
All rats are cats
No rats are dogs
Conclusion: 
1. No cats are dogs 
2. Some cats are not dogs 
3. Some cats are dogs 
4. None of these

   A.) All follows
   B.) Only 2 follows
   C.) Only 1 and 3 follows
   D.) Only 1 follows

Answer: Option 'A'

All follows


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