Paper 1 · Logical Reasoning
'No men are mortal' is contradictory to
ASome men are mortal ✓ Correct
BSome men are not mortal
CAll men are mortal
DNo mortal is man
Correct answer: (A) Some men are mortal — 'Some men are mortal' is the contradictory, so that is the answer.
Explanation
★'Some men are mortal' is the contradictory, so that is the answer.
★'No men are mortal' is a universal negative (E) proposition.
★The contradictory of an E proposition is the particular affirmative (I).
★That is 'Some men are mortal'.
★Contradictories always take opposite truth values, exactly one being true.
★So the contradictory is 'Some men are mortal'.
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