Question 1

In the traditional square of opposition, A and I are ………………………..

Accepted Answer

A) contradictories 
B) sub-contraries 
C) contraries 
D) sub-alterns

Question 2

The logical form of the sentence 'A fool is not always wrong '

Accepted Answer

A) some fools are not wrong 
B) no fools are wrong 
C) some fools are wrong 
D) none of the above

Question 3

In the traditional square of opposition, the sub-altern of 'All men are mortal' is ……….

Accepted Answer

A) no men are mortal 
B) some men are mortal 
C) some men are not mortal 
D) none of the above

Question 4

In the traditional square of opposition, the contradictory of 'All men are mortal'is……….

Accepted Answer

A) no men are mortal 
B) some men are mortal 
C) some men are not mortal 
D) none of the above

Question 5

The logical form of the sentence 'Few men are free from vanity'

Accepted Answer

A) some men are free from vanity 
B) all men are free from vanity 
C) some men are not free from vanity 
D) none of the above

Exam 2: Logical Forms and the Square of Opposition in Propositional Logic

In the traditional square of opposition, A and I are ………………………..