alleryAn inference is valid when it is impossible for what to happen?
ATrue premises with a false conclusion
BFalse premises with a true conclusion
CAny premise being stated twice
DA conclusion being surprising
Answer & Solution
Correct answer: A. True premises with a false conclusion
1. Validity concerns the link between premises and conclusion.
2. It is impossible for true premises to give a false conclusion.
3. False premises can still give a valid argument.
_Source: Wikipedia, Deductive reasoning, Validity and soundness_
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