It is false that some gothic cathedrals are not rich legacies. Therefore, some gothic cathedrals are rich legacies.
A) Invalid, illicit conversion.
B) Invalid, illicit subcontrary.
C) Valid, no fallacy.
D) Invalid, illicit subalternation.
E) Invalid, existential fallacy.

Question

Quizplus · Accepted Answer

This is a valid categorical syllogism with the form of "All A are B, and some A are C, therefore some B are C." The premise "It is false that some gothic cathedrals are not rich legacies" can be rewritten as "All gothic cathedrals are rich legacies." Then the conclusion "Some gothic cathedrals are rich legacies" logically follows from the premise "All gothic cathedrals are rich legacies."

It Is False That Some Gothic Cathedrals Are Not Rich