Consider the following argument:
1. If George Bush is a Republican, then he is not a Democrat.
2. George Bush is not a Democrat.
3. George Bush is a Republican.
a. Are all of the premises true?
b. Is the conclusion true or false?
c. Is the argument deductively valid or deductively invalid?
d. Is the argument sound? Explain, giving the definition of a sound argument.

Question

Consider the following argument:
 1. If George Bush is a Republican, then he is not a Democrat.
 2. George Bush is not a Democrat.
 3. George Bush is a Republican.
 a. Are all of the premises true? 
 b. Is the conclusion true or false?
 c. Is the argument deductively valid or deductively invalid? 
 d. Is the argument sound? Explain, giving the definition of a sound argument.

Quizplus · Accepted Answer

The Answer is a. Yes.
b. True.
c. Invalid, since it is possible that the first two premises are true but the conclusion is false (for example if George Bush were an independent).
d. No, since a sound argument is an argument that is valid and has all true premises, but this argument is invalid.

Consider the Following Argument