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  3. 32 a show that p r is logically equivalent...

Question: 32 a show that p r is logically equivalent...

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32. (a) Show that p- ( r) is logically equivalent to (pA q)r (b) Establish the validity of the argument nt (c) Consider the argument nt Use part (a), and the fact that if b is true then a → b is true, to explain why the validity of this argument is established by your proof in (b).
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