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III. Construct the formal proof of validity for each of the following arguments. (20pts) 2. (P - Q) A(-R - S) (Ctrl) * PV -R

III. Construct the formal proof of validity for each of the following arguments. (20pts) 2. (P - Q) A(-R - S) (Ctrl) * PV -R STATEMENT REASON :1Q - S 1 (P - Q) A(-R - S) 2 Hypothesis 3 AR - S 4 1 Simplification 5 QVS 6 -Q - S

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