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She uses e-commerce or she pays by credit card. She does not pay by credit card....

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Advance Math

She uses e-commerce or she pays by credit card. She does not payby credit card. Using a truth table we get result ending T T F Fwith the T matching with T's in premsis so it is valid,

but in this problem the only Ts from the premises match with theT in ending column of truth table MY QUESTION IS WHY IS THISINVALID WHILE THE ABOVE IS VALID DOES IT HAVE TO BE A TATUOLOGY TOBE VALID OR MATCH WITH Ts FROM PREMESIS

If you use your seat belt, you will be safer. You don’t use yourseat belt. Therefore you won’t be safer.

Answer & Explanation Solved by verified expert
4.3 Ratings (811 Votes)
Hence for an    See Answer
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