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Premises: P Q notQvvR Conclusion: notPvv ( Q ? ? R ) table [ [ P , Q , R , P - >
Premises:
notQvvR
Conclusion: notPvv
tablePQRPQnotQ,notQvvR,notP,QRtablenotPvvQRTTTTFTFTTTTFTFFFFFTFTFTTFFFTFFFTTFFFFTTTFTTTTFTFTFFTFTFFTTTTTFTFFFTTTTFT
The proposal is valid because the conclusion is true every time the premises are true.
This can be seen in rows and
Do you agree or disagree?
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