By using rules of inference how the valid conclusion can be determined?

yakin · Mar 21, 2014

Honestly, I do not really understand how to apply rules of inference. So i would appreciate if u could explain without missing any point.
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I think i got this, is this the correct answer? Pls refer to image.
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soroban · Mar 21, 2014

Hello, yakin!

You are correct!

By using rules of inference how the valid conclusion can be determined?

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By using rules of inference how the valid conclusion can be determined?

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