discrete mathematics with applications

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Determine which of the following pairs of statements forms are logically equivalent. Justify your answer using truth tables and include a few words of explanation. Read "t" to be a tautology and "c" to be a contradiction:

26. (p^q)v(p^r)and(pvq)^r

28. (rvp)^((~rv(p^q))^(rvq))and p^q

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