The Power of Logic 5th Edition by Howard-Snyder - Test Bank

 Logic is the study of  

A. the way people reason.

B. methods for evaluating arguments.

C. techniques for winning arguments.

D. ways to represent English statements in symbols.

2. As understood by logicians, an argument is  

A. a set of statements, one of which is supported by the others.

B. a verbal dispute between two or more people.

C. a major contributing factor to the high rate of divorce in the United States.

D. a sentence that is either true or false.

3. The primary purpose(s) of argument is(are)  

A. to persuade others to share our views.

B. to discover the truth about something.

C. to intimidate one's opponent.

D. both to persuade others to share our views, and to discover the truth about something.

4. A sound argument is one that is valid and  

A. has a true conclusion.

B. has at least one true premise.

C. has all true premises.

D. is accepted by most people.

5. A term is  

A. a 15-week semester of college.

B. a word or phrase that stands for a class.

C. a length of time in public office.

D. a pattern of reasoning.

6. A counterexample to an argument form is a substitution instance whose  

A. premises and conclusion are well-known truths.

B. premises are well-known falsehoods.

C. premises are well-known truths and conclusion a well-known falsehood.

D. conclusion is a well-known falsehood.

7. The statement "Pat is a mother only if Pat is a woman" is a stylistic variant of which type of statement?

A. disjunction

B. conditional

C. negation

D. conjunction

8. Which of the following argument forms is not valid?  

A. modus tollens

B. hypothetical syllogism

C. affirming the consequent

D. disjunctive syllogism9. The fallacy of affirming the consequent has the following form:  

A. If A, then B; Not A; So, not B.

B. If A, then B; Not B; So, not A.

C. If A, then B; A; So, B.

D. If A, then B; B; So, A.

10. A disjunctive syllogism has the following form:  

A. Either A or B; Not A; So, B.

B. If A, then C; If B, then D; Either A or B; So, either C or D.

C. If A, then B; If B, then C; So, if A, then C.

D. Either A or B; A; So, not B.

11. If an argument is strong, then  

A. its premises are all true.

B. it is improbable (but possible) that the conclusion is false on the assumption that the premises are true.

C. it is impossible for the conclusion to be false on the assumption that the premises are true.

D. the conclusion is true.

12. 13.

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20. Inductive logic is concerned with methods of evaluating arguments for  

A. strength and weakness.

B. cogency and uncogency.

C. validity and invalidity.

D. soundness and unsoundness.