Answer the questions about this "if, then" statement. If she gets a job, she will be successful. She is not successful. Therefore, she did not get a job. The conclusion in the above "if, then" statement is
A) valid.
B) invalid.

Question

Quizplus · Accepted Answer

The conclusion is valid because it follows the logical form of "modus tollens." If the conditional statement "If P, then Q" is true, and Q is false, then P must also be false. In this case, "If she gets a job (P), then she will be successful (Q)." Since she is not successful (not Q), it logically follows that she did not get a job (not P).

Answer the Questions About This "If, Then" Statement