"If P is true, then Q must be true. Q is not true. Therefore, P must not be true." This states:

Name: "If P is true, then Q must be true. Q is not true. Therefore, P must not be true." This states:
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Question

Quizplus · Accepted Answer

This is an example of the rule called modus tollens, which is a valid deductive argument form. It involves starting with a conditional statement ("If P, then Q"), and if the consequent (Q) is false, we can conclude that the antecedent (P) must also be false.

"If P Is True, Then Q Must Be True