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(Solved): 6. (6 points) Show that (p(qr))(q(pr)) is a tautology. Do not use a truth table. If ...



6. (6 points) Show that \( (p \rightarrow(q \rightarrow r)) \rightarrow(q \rightarrow(p \rightarrow r)) \) is a tautology. Do

6. (6 points) Show that is a tautology. Do not use a truth table. If you use logical equivalencies provide names of laws that you use at each step.


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