[V09] Exercises



Module: Venn diagrams


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Absence of thought is indeed a powerful factor in human affairs, statistically speaking the most powerful, not just in the conduct of the many but in the conduct of all.

- Hannah Arendt


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This page generates a random list of 10 syllogisms. See if you can determine whether they are valid or not.

Every C is an A.
No B is an A.
Therefore, every C is a B.


Every B is an A.
Every A is a C.
Therefore, every A is a B.


Every C is an A.
No B is an A.
Therefore, every A is a C.


Every A is a B.
Every B is a C.
Therefore, every C is a B.


Every B is an A.
Every B is a C.
Therefore, every C is an A.


No B is a C.
Every C is an A.
Therefore, no B is an A.


Every B is an A.
No B is a C.
Therefore, every A is a B.


Every B is a C.
Every C is an A.
Therefore, every B is an A.


Every A is a C.
Every B is an A.
Therefore, every C is an A.


Every A is a C.
No C is a B.
Therefore, no A is a B.


Want more? You can reload this page to generate another list.

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