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Indicate whether the argument form is valid (V), or invalid (I). Show your work. ~p ∨...

Indicate whether the argument form is valid (V), or invalid (I). Show your work.

~p ∨ (~q ∨ r)

~p ⊃ r

∴ q ∨ r

Indicate whether the argument form is valid (V) or invalid (I). Show your work.

~p ≡ q

p ⊃ q

∴ ~p ● q

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