I just discovered that the question Representing a binary number has been copied without citation to http://www.qandasystem.info/math/representing-a-binary-number/.

I suspect that the website "Q&A System" has plagiarized other stackexchange material. I recommend that the moderators look into this. Thanks.

  • 1
    $\begingroup$ Thank you Qiaochu and Zev. I apologize for not searching similar questions before posting my own. I wanted to vote to close as "no longer relevant" but that option isn't available. Also, I couldn't vote it as an "exact duplicate" as the question it duplicates is not in Mathematics Meta. $\endgroup$
    – JRN
    Jun 3, 2012 at 4:41
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    $\begingroup$ No need to apologize, or close the question! I appreciate any user taking an active interest in helping out the site, and I wouldn't expect people to search on meta.SO - it's a separate site, and much more crowded with quetsions at that. $\endgroup$ Jun 9, 2012 at 4:20
  • $\begingroup$ I wonder how many questions posted without citation in math.se are from other sources? And how many answers? If we have plagiarized material, can we complain about them? $\endgroup$
    – GEdgar
    Dec 21, 2015 at 14:57

2 Answers 2


This site has recently been reported to the SE team. See also this meta.SO post.


Similar things have been happening to StackOverflow and probably some of the other sites for awhile now (I first became aware of this a year ago). And of course it has been happening to Wikipedia for ages... suffice to say that the SE team is very much aware that this kind of thing happens (although maybe not to this particular site).


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