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

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.

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