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17 December, 16:32

If a person is 18 years old, then the person can vote in the presidential election. Linda cannot vote; therefore, Linda is not 18 years old.

Determine if the statement is valid.

A.

No, p → q, therefore, q → p is an invalid argument.

B.

No, p → q, therefore, ~q → ~p is an invalid argument.

C.

Yes, p → q, therefore, ~q → ~p is a valid argument.

D.

There is not enough information to determine.

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Answers (1)
  1. 17 December, 17:07
    0
    D. There isn't enough information there.

    We don't know what the p and q stand for in this question.
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