Prove for all M and N, if M and M-N are even, then N is even.

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- Oct 9th 2009, 12:29 PMsderosa518Discrete Mathematics Problem (Proofs)
Prove for all M and N, if M and M-N are even, then N is even.

- Oct 9th 2009, 12:38 PMDefunkt
- Oct 9th 2009, 02:36 PMtonio
- Oct 10th 2009, 06:52 AMHallsofIvy