Which of the following statements are contraries?

1.All men are mortal

2.Some men are mortal

3.Some men are not mortal

4.No men are mortal

A1 & 3 only

B2 & 3 only

C2 & 4 only

D1 & 4 only ✓ Correct

Correct answer: (D) 1 & 4 only

Explanation

The contraries are the two universals, A and E.

'All men are mortal' is the A proposition (Statement 1).

'No men are mortal' is the E proposition (Statement 4).

Contraries cannot both be true, yet both may be false.

The universal affirmative and universal negative pair are the contraries.

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