m is an integer. Prove by contraposition that if 5m + 4 is odd then m is oddsuppose m is even, than m = 2n for some n in N so 5(2n) +4 = 20n+4 factor out 2 = 2(10n+2) which is even, have i proved this ? ]
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Originally Posted by Tweety m is an integer. Prove by contraposition that if 5m + 4 is odd then m is oddsuppose m is even, than m = 2n for some n in N so 5(2n) +4 = 20n+4 factor out 2 = 2(10n+2) which is even, have i proved this ? ] Yep. A=5m+4 is odd, B=m is odd, show ~B --> ~A which is what you did.
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