Three of these are wrong. Find the one that holds.

Exercise and reference answers

Questions

1. Question

   Three of these conversions are invalid.

   Choices

   1. Item

      No S is P gives No P is S

      Correct

      Yes

   2. Explanation

      P was undistributed, so it cannot be distributed now.

      Item

      All S is P gives All P is S

   3. Explanation

      O cannot be truly converted.

      Item

      Some S is not P gives Some P is not S

   4. Explanation

      That flips the quality from affirmative to negative.

      Item

      All S is P gives No P is S

2. Question

   Three of these statements about the four forms are false.

   Choices

   1. Item

      I is the particular affirmative

      Correct

      Yes

   2. Explanation

      A is UNIVERSAL affirmative.

      Item

      A is the particular affirmative

   3. Explanation

      E is UNIVERSAL negative.

      Item

      E is the particular negative

   4. Explanation

      O is PARTICULAR negative.

      Item

      O is the universal negative

Explanation