The Power of Critical Thinking, Third Canadian Edition: Chapter 3

Instructions: For each question, click on the radio button beside your answer. When you have completed the entire quiz, click the “Submit my answers” button at the bottom of the page to receive your results.

Question 1:


a) True
b) False

Question 2:


a) True
b) False

Question 3:


a) True
b) False

Question 4:


a) True
b) False

Question 5:


a) True
b) False

Question 6:


a) True
b) False

Question 7:


a) True
b) False

Question 8:


a) True
b) False

Question 9:


a) True
b) False

Question 10:


a) True
b) False

Question 11:


a) True
b) False

Question 12:


a) with the help of another premise
b) without the help of any other premises
c) with implied premises
d) without implied premises

Question 13:


a) practice
b) look for premises first
c) use the five-step method
d) look for false premises first

Question 14:


a) If p, then q. q. Therefore, p.
b) If p, then q. If q, then r. Therefore, if p, then r.
c) Either p or q. Not p. Therefore, q.
d) If p, then q. p. Therefore q.

Question 15:


a) search for a credible premise that would make the argument as strong as possible
b) rewrite the argument
c) search for a credible premise that would make the argument valid
d) make a bad argument good

Question 16:


a) true premises and a false conclusion
b) false premises and a true conclusion
c) true premises and a true conclusion
d) false premises and a false conclusion

Question 17:


a) inductive
b) cogent
c) weak
d) strong

Question 18:


a) inductive
b) valid
c) deductive
d) sound

Question 19:


a) If p, then q. Not p. Therefore, not q.
b) Either p or q. Not p. Therefore, q.
c) If p, then q. p. Therefore, q.
d) If p, then q. q. Therefore, p.

Question 20:


a) If p, then q. p. Therefore, q.
b) If p, then q. q. Therefore, p.
c) If p, then q. Not p. Therefore, not q.
d) If p, then q. If q, then r. Therefore, if p, then r.

Question 21:


a) valid
b) sound
c) strong
d) none of the above

Question 22:


a) the argument must be deductively valid due to modus tollens, or denying the consequent.
b) the argument must be deductively invalid due to denying the antecedent.
c) the argument must be deductively valid due to denying the antecedent.
d) the argument must be deductively invalid due to affirming the consequent.

Question 23:


a) “If P then Q. P. Therefore, Q.”
b) “If P, then Q. Q. Therefore, P.”
c) “If P, then Q. Not Q. Therefore, not P.”
d) “If P, then Q. Not P. Therefore, not Q.”

Question 24:


a) affirming the consequent
b) a disjunctive syllogism
c) a hypothetical syllogism
d) denying the consequent, or modus tollens