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Math Help - Proof

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    Proof

    Prove that if m & n are integers and mn is even, then m is even or n is even.
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  2. #2
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    Quote Originally Posted by lm6485 View Post
    Prove that if m & n are integers and mn is even, then m is even or n is even.
    Suppose m and n are both odd, that is, they are congruent to 1 (mod 2). Multiply them and you get that mn is odd.
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