Paper 1 · Logical Reasoning
If one premise of a syllogism is negative, then the conclusion must be
ANegative ✓ Correct
BPositive
CBoth negative and positive
DNeither negative nor positive
Correct answer: (A) Negative — If a premise is negative, the conclusion must be negative, so that is the answer.
Explanation
★If a premise is negative, the conclusion must be negative, so that is the answer.
★This is one of the standard rules of the syllogism.
★A negative premise denies a connection that the conclusion cannot then affirm.
★So the conclusion inherits the negative quality.
★An affirmative conclusion from a negative premise would be invalid.
★So the answer is negative.
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