construct a truth table to determine whether each argument is valid. Be sure to state whether it is valid or invalid with each question.

Question

1) ~p v q
p
____
triangle of dots p^~q

Answer 1

invalid.
knowing something about ~p tells you nothing about p.

If it's not raining, I'll go to the store.
It's raining.

no telling whether you go to the store or not.

You can say that if you don't go to the store, it's raining. (contrapositive)