Determine which of the lettered claims below is equivalent to the following: Steve can neither be tested nor give blood. (This is easy to do if you symbolize the claims first and have some familiarity either with truth tables or with the Group II rules for derivations-the truth-functional equivalences.)
A)If Steve can give blood, then he has been tested.
B)If Steve has been tested, then he can give blood.
C)Steve cannot give blood, and he has not been tested.
D)Steve has not been tested, but he can give blood.

Question

Quizplus · Accepted Answer

C) accurately restates the original claim by directly stating that Steve cannot give blood and has not been tested, which is equivalent to saying he can neither be tested nor give blood.

Determine Which of the Lettered Claims Below Is Equivalent to the Following