All A are non-B. (F) Conversion
A) All B are non-A. (Und.)
B) All non-A are B. (F)
C) All non-B are A. (Und.)
D) No A are B. (F)
E) No A are non-B. (Und.)

Question

Quizplus · Accepted Answer

The correct conversion of "All A are non-B" is "All non-B are A." The term "non-B" does not specify a particular category, so it cannot be inferred that all non-A are B (option B) or that no A are B (option D). Also, "non-B" should not be interpreted as "B" (option A) or "non-non-B" (option E) without additional information. Therefore, the only valid option is C, which states that all things that are not B are A.

All a Are Non-B. (F) Conversion