Proof by contraposition: if 3n + 2 even, then n even

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Exercise 18, Section 1.7
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Holy crap, you published this 2 days before I have to turn this homework in.  I saw it had 3 views and couldn't figure out why only 3.  Great video, very clear.

shawniscoolerthanyou
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what do you mean by " contrapositive of the contrapositive"?  where are your two contrapositives?

goodtime