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Question

1.  Show these argument forms are invalid by assigning sentences to the letters to give the

arguments obviously true premises and an obviously false conclusion.

a.   If A then B

B

A


b.   Either A or B

A

So B is not true.


Example:             If A then B

                               A is not true

                               So, B is not true

Answer:              A = Walmart has $1T in revenue.

                               B = Walmart is the largest company.

 

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