FALSE: A valid argument must have a true conclusion only if all of the premises are true. So it is possible for a valid argument to have a false conclusion as long as at least one premise is false.
Contents
Can an argument be valid even if it has false premises?
A valid argument can have false premises; and it can have a false conclusion. But if a valid argument has all true premises, then it must have a true conclusion.
Can an argument with false premises be invalid?
For an argument is invalid if it is possible that its premises are true while its conclusion is false. Argument H, for example, has a false premise; so its invalidity is not obvious from the truth values of its premises and conclusion alone.
Can arguments be valid but not true?
It is important to stress that the premises of an argument do not have actually to be true in order for the argument to be valid. An argument is valid if the premises and conclusion are related to each other in the right way so that if the premises were true, then the conclusion would have to be true as well.
Can a valid argument have all true premises and a false conclusion?
TRUE: A valid argument cannot have all true premises and a false conclusion. So if a valid argument does have a false conclusion, it cannot have all true premises. Thus at least one premise must be false.
Can an invalid argument have all true premises and a true conclusion?
If an argument is invalid, then it must have at least one false premise. If an argument has a conclusion that is certainly false, then the argument must be invalid. If the premises and conclusion are all false, the argument must be invalid. Some invalid arguments have true premises and a true conclusion.
Can an argument be true or false?
For the premises to be true, all of them need to be true. But, for the premises to be false, only one need be false. So, an argument with a mixture of true and false premises is still considered to be an argument with false premises–it is false that all of the premises are true.
What makes a argument valid?
Valid: an argument is valid if and only if it is necessary that if all of the premises are true, then the conclusion is true; if all the premises are true, then the conclusion must be true; it is impossible that all the premises are true and the conclusion is false.
Can an invalid argument have a true conclusion quizlet?
If an argument is invalid, then it must have true premises and a false conclusion. Every valid argument has this feature: Necessarily, if its premises are true, then its conclusion is true. Every invalid argument has this feature: It is possibly false that if its premises are true, then its conclusion is true.
Can a valid argument have false premises quizlet?
A valid argument can have false premises and a true conclusion. If an argument is unsound, then it must have false premises. An argument may be unsound in one of three ways.
Do invalid arguments always have false conclusions?
If it is not possible for the conclusion of an argument to be false, then the argument is valid. T F 5. Every invalid argument has a false conclusion. T F 6.
Can an argument be valid even when one of its premises is restated as the conclusion?
1 Expert Answer
A properly formed argument is said to be valid, which means that it is structured in such a way that if all of its premises are true, and all terms are used clearly and without equivocation, then the conclusion is true.
Can there be a valid deductive argument containing false premises and false conclusion explain with an example?
If Elizabeth Taylor is president of the United States, then Elizabeth Taylor must be younger than 35. Elizabeth Taylor is president of the United States. So, Elizabeth Taylor must be younger than 35. For either example, the logic is valid but the premises are false.
Can an argument be only of false proposition?
A valid argument may have false premises with either a true or a false conclusion. The only combination that is ruled out is a valid argument with true premises and a false conclusion. Sound arguments always have true conclusions. The validity of a deductive argument is determined entirely by its form.
When it is impossible for the conclusion to be false given that the premises are true it an example of?
To summarize, a valid deductive argument is one where it would be impossible for the conclusion to be false given that the premises were true.
How do you determine if an argument is valid or invalid?
An argument is valid means that its form is valid. If there is a critical row in which the conclusion is false, then the argument is invalid.
What logical conclusion can you draw about an argument that is valid but has a false conclusion?
A valid argument had false premises must have a false conclusion,it is impossible that ones have false premises and a true conclusion. What logical conclusion can you draw about an argument that is valid but has a false conclusion? This argument must have at lease one false premise.
Related posts:
How does Kant justify the introduction of the noumenon?
How to convince an anti-rawlsian of the pertinence of the “veil of ignorance” condition?
Consistency in Modal Metaphysics?
Is symmetry real?
In what order should I read The Republic, Aristotle’s Politics, and The Prince?
Why in the academic fields of art and design, the philosophy taught or mentioned is often Continental philosophy?
Baconian Logical Fallacy?
Is the delayed choice quantum eraser a refutation of principle of causality? How does contemporary philosophy make sense of it?
Why are legal and moral responsibilities said to be different?
How are epistemological and ontological realism related?