0
$\begingroup$

Possible Duplicate:
Would like a proofreading of my proof

Prove that if $n$ is positive integer, then $n^2$ is divisible by $3$ with remainder either $0$ or $1$.

  • 1
    [a duplicate](http://math.stackexchange.com/q/62831/11619)2011-10-23
  • 0
    @evodevo: Don't take it personally that this is being closed. A house rule. I'm sure you will learn enough by studying the answers of the duplicate question.2011-10-23

1 Answers 1