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Madeline must have known the material for the test, because if a person knows the material, that person will always get an A, and Madeline was one of the students that got an A.

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Madeline must have known the material for the test, because if a person knows the material, that person will always get an A, and Madeline was one of the students that got an A.

This is invalid. The ...

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Valid or invalid scenarios are assessed.

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