Which of the following statements are contradictory to each other? Choose the correct answer from the options given below.

1.All plants are fungi

2.No plants are fungi

3.Some plants are not fungi

4.Some plants are fungi

A2 and 4 only ✓ Correct

B1 and 2 only

C3 and 4 only

D1 and 4 only

Correct answer: (A) 2 and 4 only

Explanation

'No plants are fungi' and 'Some plants are fungi' stand as contradictories.

The first is a universal negative (E), the second a particular affirmative (I).

On the square of opposition E and I are contradictory pairs.

They can never share a truth-value: if one is true the other must be false.

Denying 'some plants are fungi' is exactly asserting 'no plants are fungi'.

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