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    Proof by Contradiction: 3n + 2 is Even, N is Even

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    Assume that n is a positive integer. Use the proof by contradiction method to prove and explain if 3n + 2 is an even integer then n is an even integer.

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    Solution Preview

    As the proof needs to be given using contradiction method,
    Let us suppose that 3n+2 is an even integer but n is NOT an even integer.
    This means, n should be an odd ...

    Solution Summary

    The proof by contradiction method is demonstrated in this solution to show that if 3n + 2 is even, n is even as well.