Validity

Given a valid argument with a false conclusion, what, if anything, can one infer about the truth or falsity of the premises?
1. All the premises must be true.
2. At least one premise must be true.
3. At least one premise must be false.
4. One can infer nothing.
Given an invalid argument with a false conclusion, what, if anything, can one infer about the truth or flasity of the premises?
1. All the premises must be true.
2. At least one premise must be true.
3. At least one premise must be false.
4. One can infer none of the above.
Given a valid argument with a false premise, what, if anything, can one infer about the truth or falsity of the conclusion?
1. The conclusion must be false.
2. The conclusion must be true.
3. The conclusion can be either true or false.
4. One can infer nothing.
Given a valid argument with all true premises, what, if anything, can one infer about the truth or falsity of the conclusion?
1. The conclusion must be false.
2. The conclusion must be true.
3. The conclusion can be either true or false.
4. One can infer nothing.
Given a sound argument, what, if anything, can one infer about the truth or falsity of the conclusion.
1. The conclusion must be false.
2. The conclusion must be true.
3. The conclusion can be either true or false.
4. One can infer nothing.