1.3ex II
Validity, Soundness, Inductive, Deductive

Multiple Choice: Click on the correct answer and the page will jump forward to the next problem.

 

1. If an argument is valid then
a. it must be sound. b. it cannot be sound. c. it is sound only if all its premises are true. d. it is sound but has false premises.

2. If an argument is valid then
a. it is impossible for its premises to be true when the conclusion is false. b. it cannot be sound. c. it is possible for its premises to be true when its conclusion is false. d. it is possible for its premises to be true when its conclusion is false but only if it is not sound.

3. If a statement is logically impossible, then
a. that statement is true. b. that statement is known to be false. c. it could not have turned out that the statement is true.

4. If an argument is inductive and inductively strong, then
a. that argument has true premises but a false conclusion because it is not deductive. b. that argument is valid but not sound. c. that argument has a conclusion which is probably true if the premises are true. d. that argument must be cogent.

5. If an argument is sound, then
a. it may have a false premise. b. it may fail to be valid. c. it may have a false conclusion. d. none of the above.

6. If an argument is deductive, then
a. it is intended that it be valid. b. it is probably valid. c. it is sound if it is valid. d. it is valid.

 

 

 

 

 

 

 

 

 

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