1.1 B

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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.


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