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Proving the difference between odd numbers is even Watch

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    (Original post by Kvothe the arcane)
    Winston says, "when you subtract an odd number from another odd number the answer will always be odd.'

    Is this true or false? Tick the correct answer

    \text{True} \ \fbox{} \qquad \text{False} \ \fbox{}

    Explain your answer.
    When *I* subtract an odd number from an odd number the parity of the result can be rather surprising...
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    (Original post by Kvothe the arcane)
    Official answer says "False. An odd number subtracted from another odd number will always given an even number, e.g. 17-5=12" so Yes.
    That's barely an answer at all; it asserts but does not prove.
 
 
 
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