Some princes are not military officers, since some reigning monarchs are not military officers and some princes are reigning monarchs.
A) Deductive valid.
B) Inductive, weak.
C) Deductive, invalid.
D) Inductive, strong.
E) Inductive, sound.

Question

Quizplus · Accepted Answer

The argument is deductive, but it is invalid. The first premise states that "some reigning monarchs are not military officers," which does not necessarily mean that all reigning monarchs are not military officers. Therefore, the conclusion that "some princes are not military officers" cannot be logically deduced.

Some Princes Are Not Military Officers, Since Some Reigning Monarchs