1.1 B
35. False
"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.
7. False
A sound argument can have a false conclusion
18. False
If all the premises of an argument are true, then it is sound.
19. True
If an argument has (all) true premises and a false conclusion, then it is invalid.
20. True
If an argument has one false premise, then it is unsound.
26. False
If an argument is invalid, then it must have true premises and a false conclusion.
33. True
Inductive logic is the study of methods for evaluating whether the premises of an argument make its conclusion probable, without guaranteeing it.
4. True
Logic is the study of methods for evaluating whether the premises of an argument adequately support its conclusion.
25. False
Some arguments are false.
10. False
Some arguments are true.
12. True
Some invalid arguments have false conclusions but (all) true premises.
17. False
Some premises are valid.
5. False
Some statements are invalid.
34. False
"It's raining outside, so the ground is wet," is best regarded as a deductive argument.
11. False
If a valid argument has only false premises, then it must have a false conclusion.
9. True
If a valid argument has only true premises, then it must have a true conclusion.
31. False
A deductive argument is one in which the premises are intended to make the conclusion probable, without guaranteeing it.
1. False
All valid arguments have at least one false premise.
2. True
An argument is a set of statements where some of the statements, called the premises, are intended to support another, called the conclusion.
32. False
An inductive argument is one in which the premises are intended to guarantee the conclusion.
8. True
Deductive logic is the part of logic that is concerned with tests for validity and invalidity.
28. True
Every invalid argument has this feature: It is possibly false that if its premises are true, then its conclusion is true.
24. True
Every invalid argument is unsound.
29. True
Every sound argument has a true conclusion.
13. True
Every sound argument is valid.
21. False
Every unsound argument has at least one false premise.
16. False
Every unsound argument is invalid.
23. False
Every valid argument has a true conclusion.
30. False
Every valid argument has this feature: Necessarily, if its premises are false,then its conclusion is false.
27. True
Every valid argument has this feature: Necessarily, if its premises are true, then its conclusion is true.
6. False
Every valid argument has true premises and a true conclusion.
3. False
Every valid argument has true premises and only true premises
15. True
Every valid argument with a false conclusion has at least one false premise.
14. False
Every valid argument with a true conclusion is sound.
22. False
Some statements are sound.
