Logical Deduction - General Inteligence & Reasoning MCQ Questions and Answers

21

Statements : All poles are guns. Some boats are not poles.

Conclusions :
I. All guns are boats.
II. Some boats are not guns.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option D

Solution:

Clearly, the term 'guns' is distributed in both the conclusions without being distributed in any of the premises. So, neither conclusion follows.

22

Statements : Many scooters are trucks. All trucks are trains.

Conclusions :
I. Some scooters are trains.
II. No truck is a scooter.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option A

Solution:

Since the first premise is particular, the conclusion must be particular and should not contain the middle term. Thus, only I follows.

23

Statements : Some papers are pens. Angle is a paper.

Conclusions :
I. Angle is not a pen.
II. Angle is a pen.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option C

Solution:

Since the middle term 'papers' is not distributed even once in the premises, no definite conclusion follows. However, I and II involve only the extreme terms and form a complementary pair. Thus, either I or II follows.

24

Statements : All birds are tall. Some tall are hens.

Conclusions :
I. Some birds are hens.
II. Some hens are tall.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option B

Solution:

Since the middle term 'tall' is not distributed even once in the premises, no definite conclusion follows. However, II is the converse of the second premise and so it holds.

25

Statements : Some papers are pens. Some pencils are pens.

Conclusions :
I. Some pens are pencils.
II. Some pens are papers.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option E

Solution:

Since both premises are particular, no definite conclusion follows. However, I is the converse of second premise, while II is the converse of the first premise. So, both of them hold.

26

Statements : Some men are educated. Educated persons prefer small families.

Conclusions :
I. All small families are educated.
II. Some men prefer small families.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option B

Solution:

Since one premise is particular, the conclusion must be particular and should not contain the middle term. Thus, only II follows.

27

Statements : All educated people read newspapers. Rahul does not read newspaper.

Conclusions :
I. Rahul is not educated.
II. Reading newspaper is not essential to be educated.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option A

Solution:

Since both the premises are universal and one premise is negative, the conclusion must be universal negative and should not contain the middle term. So, only I follows.

28

Statements : All pens are chalks. All chairs are chalks.

Conclusions :
I. Some pens are chairs.
II. Some chalks are pens.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option B

Solution:

Since the middle term 'chalks' is not distributed even once in the premises, no definite conclusion follows. However, II is the converse of the first premise and so it holds.

29

Statements : Bureaucrats marry only intelligent girls. Tanya is very intelligent.

Conclusions :
I. Tanya will marry a bureaucrat.
II. Tanya will not marry a bureaucrat.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option C

Solution:

The data does not mention whether all intelligent girls are married to bureaucrats. So, either I or II may follow.

30

Statements : Some engineers are fools. Anand is an engineer.

Conclusions :
I. Some fools are engineers.
II. Anand is a fool.

A) Only conclusion I follows B) Only conclusion II follows C) Either I or II follows D) Neither I nor II follows E) Both I and II follow

Discuss

Answer & Solution

Answer: Option A

Solution:

Since the middle term 'engineer' is not distributed even once in the premises, no definite conclusion follows. However, I is the converse of the first premise and thus it holds.