No fashion shows are events without models. Therefore, all fashion shows are events with models.
A) Invalid, illicit contraposition.
B) Invalid, illicit obversion.
C) Invalid, existential fallacy.
D) Invalid, illicit contrary.
E) Valid.

Question

Quizplus · Accepted Answer

This is a straightforward example of a valid categorical syllogism in the form "All A are B; All C are A; Therefore, All C are B." The premise "No fashion shows are events without models" can be rewritten as "All fashion shows are events with models" because anything that is not an event with models cannot be considered a fashion show. The conclusion "All fashion shows are events with models" follows logically from the premise "All fashion shows are events with models" and the premise "No fashion shows are events without models."

No Fashion Shows Are Events Without Models