False premise and false conclusion

    • [DOC File]12 - Fordham University

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      Given that the conclusion is false, see what follows about the truth values of the letters that make up the conclusion. For example, the only way the conclusion “K” can be false, is if the atomic sentence “K” is false, so write F under the appropriate atomic heading. Premise 1 Premise 2 Conclusion

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    • [DOC File]Formal fallacies

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      false (2 points each): All valid arguments have at least one false premise . F. Some statements are invalid . F. Every valid argument has true premises and a true conclusion . F. A sound argument must have a true conclusion . T. Every sound argument is valid . T. An invalid argument can have all true premises and a true conclusion . T

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    • [DOC File]SYMBOLIC LOGIC

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      Premise 1. Premise 2. Conclusion. Fa Ga Ha Fa ( Ga Ga & Ha Fa & Ha. Write an “F” under the conclusion to make it false. Try to assign the truth values to the component sentences in such a way as to make the conclusion false and the premises true. Premise 1. Premise 2.

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    • [DOC File]Exam #1

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      1) True 2) False 3) True 4) False 5) False. A sound argument is one which is both VALID and has all true premises. Since a valid argument is one in which the truth of the premises guarantees the truth of the conclusion, it follows that the conclusion of a sound argument MUST be true. So, any argument with a false conclusion is unsound.

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    • [DOC File]A Brief Introduction to Logic

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      The first premise is false (Ostriches and Emus can’t fly) and the second premise is false (obviously). So the argument is unsound (even though the conclusion is true). This argument is said to be valid because the conclusion follows logically from the premises.

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    • [DOC File]PREDICATE LOGIC

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      Logically false: a sentence that is always false, because it involves a contradiction. For example: “A & ~A” or “If A, then ~A”. See if you can explain the following: Any argument with a logically false premise is deductively valid but not sound. Any argument with a logically true conclusion is deductively valid, and may or may not be ...

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    • [DOC File]Logic primer - University of Washington

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      This is the premise on which Murphy's Law is based. Argument from fallacy: assumes that if an argument for some conclusion is fallacious, then the conclusion is false. Bare assertion fallacy: premise in an argument is assumed to be true purely because it says that it is true.

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    • False premise - Wikipedia

      A sound argument may have a false premise. Answer: F. The content of the argument deals with the structure of the argument. Answer: F. The conclusion of a valid argument can be false. Answer: T. Premises are reasons given in support of the conclusion. Answer: T. An argument can be said to be true or false. Answer: F. Logic is the study of ...

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    • [DOC File]Sample Exam I key

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      an argument is to present it in premise–conclusion form, listing the premises and the conclusion. General Procedure for Testing the Validity of a Deductive Argument: 1. Identify the form of the argument. 2. Try to find an argument of the same form with true premises and a false conclusion. 3.

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