QUESTION 16 Prove the validity or invalidity of the following argument using the indirect truth table method. Make sure to explicitly state whether the argument is valid or invalid. p->q; p->r; ~p; therefore ~qv~r QUESTION 17 Prove the validity or invalidity of the following argument using the indirect truth table method. Make sure to explicitly state whether the argument is valid or invalid. ~p->q; r->~s; ~pvr; therefore qv~s
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