Which of the following statements are contradictory to each other?
1.All human beings are mortal
2.No human beings are mortal
3.Some human beings are mortal
4.Some human beings are not mortal
A1 & 2 only
B2 & 3 only ✓ Correct
C3 & 4 only
D2 & 4 only
Correct answer: (B) 2 & 3 only
Explanation
Statements 2 and 3 are contradictory to each other.
Statement 2 "No human beings are mortal" is an E proposition.
Statement 3 "Some human beings are mortal" is an I proposition.
E and I stand as contradictories on the square of opposition.
One must be true and the other false, so they negate each other exactly.
Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.
Practise on Mcqkart →🎓 Book an expert →