Valid argument with false premise example

• [DOC File]Arguing well

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  There are two types of well-formed arguments, valid and cogent. An argument is valid when it is impossible for the premises to be true and the arguments to be false. Example 6. All Pacific salmon migrate upstream to spawn. Winter-run chinook are Pacific salmon. Winter-run …

  valid argument with false conclusion

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• [DOC File]Argument: a set of reasons given in support of a conclusion

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  If so, the argument is valid. Notice that a valid argument can have a false conclusion! A valid argument can have false premises. Re-constructing an author’s argument into standard form. In the simplest case, we may need only to re-arrange the propositions of the argument in order to translate it into a standard-form categorical syllogism.

  example of false premise

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• [DOC File]Introduction to Logic: Worksheet 1

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  Every valid argument with a true premise is sound. False; a sound argument requires that the argument to be valid, and also that all premises are true, not just one. Therefore, it is false that every valid argument with a true premise is sound. 3. Give an example of: An invalid argument with at least one true premise and a false conclusion ...

  can a valid argument have false conclusion

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• [DOC File]Logic primer - University of Washington

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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 ...

  logic false premise

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• [DOC File]Study Questions for First Exam

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  Can a valid argument have a false conclusion? If so, give a clear example. Can an invalid argument have a true conclusion? If so, give a clear example. Explain your answers. Can an argument in which all premises and the conclusion are true be unsound? If so, give a clear example. Can an argument in which every premise and the conclusion are ...

  true premises false conclusion

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• [DOC File]Constructing Arguments

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  Is this argument valid? Yes, because the proper conditions apply – assuming true, does it follow. Validity is a formal distinction, attending to its form, not its truth value. Soundness, on the other hand, deals with truth value. A sound argument has all true premises – thus, the first example is a sound argument, whereas the second isn’t.

  valid argument definition

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• [DOC File]A Brief Introduction to Logic

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  valid argument –an argument for which it is impossible (inconceivable) that all of its premises are true and (at the same time) its conclusion is false example— Brad will pass the test only if he studies. (premise) If Brad goes to the fraternity party, then he will not study. ...

  philosophy valid argument

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• [DOC File]Logic - OpenTextBookStore

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  If it is always true, then the argument is valid. Example 34. Consider the argument. Premise: If you bought bread, then you went to the store. Premise: You bought bread. Conclusion: You went to the store. While this example is fairly obviously a valid argument, we can analyze it using a truth table by representing each of the premises symbolically.

  true premises false conclusion example

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• [DOC File]uopcourses.com

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  33. Is the entire argument valid? A. Yes, because both of the premises are true. B. Yes, because there is a clear chain from "a natural number is divisible by . 1212 " to "a natural number is divisible by . 33 ." Your answer is correct. C. No, because the first premise is false. D.

  valid argument with false conclusion

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• [DOC File]STATEMENT, ARGUMENTS, VALIDITY, SOUNDNESS

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  An argument is . valid, if and only if, given that all the premises are true, the conclusion must be true. OR: An argument is . valid, if and only if, it is impossible that all the premises are true and the conclusion is false. OR: An argument is . valid, if and only if, the conclusion follows of necessity from the premises.

  example of false premise

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