Using rules from both Group I and Group II, construct a deduction to prove that the following is valid.1. P ? (Q & R) (Premise)2. ~(S & Q) (Premise)3. (R ? S) & Q (Premise)/? ~P

What will be an ideal response?


4. ~S v ~Q 2, DEM
5. ~Q v ~S 4, COM
6. Q ? ~S 5, IMPL
7. Q 3, SIM
8. ~S 6,7, MP
9. R ? S 3, SIM
10. ~R 9,8, MT
11. ~R v ~Q 10, ADD
12. ~(R & Q) 11, DEM
13. ~(Q & R) 12, COM
14. ~P 1,14, MT

Philosophy & Belief

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