State precisely (but concisely) what it means for a form of argument to be valid.

What will be an ideal response?


Sample answers:
For a form of argument to be valid means that no matter what statements are substituted for its
statement variables, if the resulting premises are all true, then the conclusion is also true.
Or: For a form of argument to be valid means that no matter what statements are substituted for its
statement variables, it is impossible for all the premises to be true at the same time that the conclusion
is false.
Or: For a form of argument to be valid means that no matter what statements are substituted for its
statement variables, it is impossible for conclusion to be false if all the premises are true.

Mathematics

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A.

B.

C.

D.

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A.
B.
C.
D.

Mathematics