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Please help with solving a proof

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Please help me solve this proof, the third line is the conclusion.

1. P -> (Q -> R) 
2. R -> (Q -> ~P) 

 ~P v ~Q?

Oct 21st, 2017

1. P -> (~Q V R).....~PV (~QVR)..... (~PV~Q )V R..... ~(P^Q)VR......(P^Q)->R

2  R -> (~Q V ~P).....R-> ~(P^Q)

Conclusion ~PV~Q....~(P^Q) is a valid argument


May 30th, 2015

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Oct 21st, 2017
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Oct 21st, 2017
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