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I'm taking philosophy this semester
Topic Started: Sep 4 2009, 02:29 AM (318 Views)
9182

It's rather interesting. really blows your mind. when you think something is true there are possibilities that it might not be.

Stay tuned for definition of premises, statements, inductive\deductive arguments, validity and invalidity. (i haven't bought the book T.T it so expensive)


True or False!
1. All valid arguments have at least one false premise.
2. An argument is a set of statements where some of the statements, called the premises, are intended to support another, called the conclusion.
3. Every valid argument has true premises and only true premises
4. Logic is the study of methods for evaluating whether the premises of an argument adequately support its conclusion.
5. Some statements are invalid.
6. Every valid argument has true premises and a true conclusion.
7. A sound argument can have a false conclusion
8. Deductive logic is the part of logic that is concerned with tests for validity and invalidity.
9. If a valid argument has only true premises, then it must have a true conclusion.
10. Some arguments are true.
11. If a valid argument has only false premises, then it must have a false conclusion.
12. Some invalid arguments have false conclusions but (all) true premises.
13. Every sound argument is valid.
14. Every valid argument with a true conclusion is sound.
15. Every valid argument with a false conclusion has at least one false premise.
16. Every unsound argument is invalid.
17. Some premises are valid.
18. If all the premises of an argument are true, then it is sound.
19. If an argument has (all) true premises and a false conclusion, then it is invalid.
20. If an argument has one false premise, then it is unsound.
21. Every unsound argument has at least one false premise.
22. Some statements are sound.
23. Every valid argument has a true conclusion.
24. Every invalid argument is unsound.
25. Some arguments are false.
26. If an argument is invalid, then it must have true premises and a false conclusion.
27. Every valid argument has this feature: Necessarily, if its premises are true, then its conclusion is true.
28. Every invalid argument has this feature: It is possibly false that if its premises are true, then its conclusion is true.
29. Every sound argument has a true conclusion.
30. Every valid argument has this feature: Necessarily, if its premises are false,then its conclusion is false.
31. A deductive argument is one in which the premises are intended to make the conclusion probable, without guaranteeing it.
32. An inductive argument is one in which the premises are intended to guarantee the conclusion.
33. Inductive logic is the study of methods for evaluating whether the premises of an argument make its conclusion probable, without guaranteeing it.
34. "It's raining outside, so the ground is wet," is best regarded as a deductive argument.
35. "It must be raining outside. After all, if it weren't, then the ground would be dry, but it's soaking wet" is best regarded as an inductive argument.
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