1.2ex IV
Validity and Soundness

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

 

1. If an argument is valid, then it MUST
a. have true premises. b. have a true conclusion. c. be sound. d. none of the above.

2. If the premises of an argument are true and its conclusion is also true, then
a. the argument must be valid.b. the argument must be sound.c. the argument must be valid and sound.d. none of the above

3. The argument "All and only gophers dig holes in the ground. The animals in my yard dig holes in the ground. So, the animals in my yard are gophers." is
a. valid.b. sound.c. valid and sound.d. none of the above.

4. The argument "Every one of Tell's books has been a best seller. So, his next book is likely to be a best seller." is
a. valid.b. sound.c. valid and sound.d. none of the above.

5. An invalid argument MAY have
a. false premises and false conclusion.b. false premises and true conclusion.c. true premises and true conclusion.d. all of the above.

6. A valid argument MAY have
a. false premises and false conclusion.b. false premises and true conclusion.c. true premises and true conclusion.d. all of the above.

7. A valid argument MAY NOT
a. be sound.b. have true premises and a false conclusion.c. neither of the aboved. both of the above.

 

 

 

 

 

 

 

 

 

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