Introduction to Logic

Study Questions - quiz


An argument is valid if and only if it is impossible for all its premises to be true and its conclusion false.

A valid argument preserves truth:
1. when all premises are true, the conclusion is also true.
2. when the conclusion is false, at least one premise must be false.


1. Given a valid argument, what, if anything, does one know about the truth or falsity of its conclusion?
True False Undetermined

2. Given a valid argument, what, if anything, does one know about the truth or falsity of its premises?
True False Undetermined

3. Given a valid argument with all true premises, what if anything, does one know about the truth or falsity of its conclusions?
True False Undetermined

4. Given a valid argument with all false premises, what if anything, does one know about the truth or falsity of its conclusion?
True False Undetermined

5. Given a valid argument with a false conclusion, what, if anything, does one know about the truth or falsity of its premises?
True False Undetermined

6. Given a valid argument with a true conclusion, what, if anything, does one know about the truth or falsity of its premises?
True False Undetermined




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