by RonPurewal Sun May 22, 2016 9:59 am
by the way, we need a citation of the ORIGINAL source of this problem, in order to discuss it any further.
right now all we have is "source: beatthegmat", but that's another forum where people just re-post problems from other sources. we need the ORIGINAL source -- i.e., original authorship. in other words, we need to know the answer to, "who owns the copyright to this problem?"