Which of the following statements are contrary to each other?

1.All objects are perishable

2.Some objects are perishable

3.Some objects are not perishable

4.No objects are perishable

A3 & 4 only

B1 & 4 only ✓ Correct

C2 & 4 only

D1 & 3 only

Correct answer: (B) 1 & 4 only

Explanation

Statements 1 and 4 are contrary to each other.

Statement 1 "All objects are perishable" is an A proposition.

Statement 4 "No objects are perishable" is an E proposition.

A and E are contraries on the square of opposition.

They cannot both be true, yet both can be false together.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.