Some A are B. (T) Obversion
A) Some B are A. (T)
B) Some non-B are non-A. (T)
C) Some A are not non-B. (T)
D) Some non-A are not non-B. (T)
E) Some non-A are not B. (Und.)

Name: Some A are B. (T) Obversion A) Some B are A. (T) B) Some non-B are non-A. (T) C) Some A are not non-B. (T) D) Some non-A are not non-B. (T) E) Some non-A are not B. (Und.)
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Question

Quizplus · Accepted Answer

The obversion of "Some A are B" is "Some A are not non-B," which is logically equivalent and true.

Some a Are B. (T) Obversion