Assume the statements are true.
Statements: All poles are posts. All posts are pillars.
Conclusions:
I. All pillars being poles is a possibility.
II. Some poles not being pillars is a possibility.

Only I followsCorrect answerYour answerOnly II followsCorrect answerYour answerNeither I nor II followsCorrect answerYour answerBoth I and II followCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

All three circles may coincide: every pillar a post, every post a pole. That picture obeys both statements, so I follows.
Every pole is a post and every post is a pillar, so every pole is a pillar in every picture. 'Some poles not being pillars' is impossible: II does not follow.
Only I follows.

Worth noting

'All A are B' allows A and B to be exactly the same group, so 'All B being A' is always a possibility.

Concept: Reverse All is a possibility
Typical timeTypical: 40 s
Your timeYours: —

The rule this testsPossibility and either-or

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Ten questions from Syllogisms, at your own pace.

Assume the statements are true.Statements: All poles are posts. All posts are pillars.Conclusions:I. All pillars being poles is a possibility.II. Some poles not being pillars is a possibility.

Explanation

Assume the statements are true.
Statements: All poles are posts. All posts are pillars.
Conclusions:
I. All pillars being poles is a possibility.
II. Some poles not being pillars is a possibility.