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Questions and Answers
What are the valid moods of the First Figure?
In the Second Figure, both premises must be negative.
False
What is the requirement for the minor premise in the Third Figure?
The minor premise must be affirmative.
The valid moods for the Fourth Figure include _____, AEE, EAO, EIO and IAI.
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Which of the following valid moods is NOT found in the Second Figure?
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What is required for the conclusion in the Third Figure?
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Study Notes
The First Figure
- The major premise must be universal (A or E)
- The minor premise must be affirmative (A or I)
- Valid Moods: (AAA, AII, EAE, and EIO)
The Second Figure
- The major premise must be universal (A or E)
- One premise must be negative (E or O)
- Valid Moods: (AEE, AOO, EAE and EIO)
The Third Figure
- The minor premise must be affirmative.
- The conclusion must be particular
- Valid Moods: (AAI, AII, EAO, EIO, IAI and OAO)
The Fourth Figure
- If the major premise is affirmative, the minor premise must be universal.
- If the minor premise is affirmative, the conclusion must be particular.
- If a premise (and the conclusion) is negative, the major premise must be universal.
- Valid Moods: (AAI, AEE, EAO, EIO and IAI)
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Description
Test your understanding of the four figures of syllogism and their valid moods. This quiz covers the requirements for major and minor premises, along with the valid mood combinations for each figure. Perfect for students of logic looking to reinforce their knowledge!
