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Oct 18, 2012 at 20:26 comment added Russ Woodroofe In the edition currently posted on Stanley's website (the July 15 2011 version), this is actually problem 135, rather than 122. It is tagged with [5], which means unsolved.
Oct 18, 2012 at 1:37 comment added darij grinberg Second edition of EC1: www-math.mit.edu/~rstan/ec/ec1
Dec 10, 2011 at 9:26 comment added UmerScientist I don't have the second edition. It'll be helpful if you can attach a snippet of it...
Dec 9, 2011 at 2:27 history answered matthias beck CC BY-SA 3.0