A proposition Q follows from a proposition P, if Q is never false when P is true. Suppose we want to check this in a particular case. Which of the following is correct? Select one: a. We need to check...

A proposition Q follows from a proposition P, if Q is never false when P is true. Suppose we want to check this in a particular case. Which of the following is correct?

Select one:

a. We need to check that whenever P is false, Q is also false.

b. We need to check that whenever Q is false, P is also false.

c. We need to check that whenever Q is true, P is also true.

d. We need to check that Q is true when P is true, and that Q is false when P is false.

Jun 11, 2022

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A proposition Q follows from a proposition P, if Q is never false when P is true. Suppose we want to check this in a particular case. Which of the following is correct? Select one: a. We need to check...

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