It is false that some sailboats are steamships. Therefore, some sailboats are not steamships.
A) Valid, no fallacy.
B) Invalid, illicit contrary.
C) Invalid, illicit subalternation.
D) Invalid, illicit conversion.
E) Invalid, illicit subcontrary.

Question

Quizplus · Accepted Answer

The argument is valid because it correctly infers that if no sailboats are steamships (as implied by the statement), then some sailboats are not steamships. This follows logically without committing any fallacy.

It Is False That Some Sailboats Are Steamships