1. 
Is the statement "1 + 1 = 2 or any two points determine a line" true or false? > False

2. 
What is the converse of r → z? > z → r

3. 
Which of "and," "not," and "or" link two statements together? > "not"

4. 
How many values of x make the statement "x ≤ 5 and x ≥ 5" true? > Infinitely many

5. 
Suppose we know a → b, b → c. If we know b is true, may we infer c? > Yes, by detachment

6. 
Is the contrapositive of "Everything brown is a dog" true? > No, and a white dog is a counterexample

7. 
Which is an example of something "white or not soft?" > White rock candy

8. 
Suppose that p → q and p → r. May we infer that q → r? > No

9. 
What is the converse of not p → not q? > not q → not p

10. 
The statements p → q and q → r are given. If we know q to be true, which of the following CANNOT be assumed as true? > p
