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Please complete parts a & b and show all work! Thanks! 2. Direct proof with contrapositive Use proof by contrapositive to prove the following propositions:

Please complete parts a & b and show all work! Thanks!

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2. Direct proof with contrapositive Use proof by contrapositive to prove the following propositions: (a) If z2016 is odd, then z is odd. (b) Let x Z, if x2-6x + 5 is even, then x is odd

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