Jrthedawg Posted July 22, 2013 Share Posted July 22, 2013 Have a look at this riddle. I've never seen anything quite like it, and I am a collector of math puzzles and brain teasers. See if you can solve it without reading the solution (at the bottom of the link). I guess there is a slight hint given in the explanation, and that is that a solution involves the axiom of choice. Link to comment Share on other sites More sharing options...
imatfaal Posted July 22, 2013 Share Posted July 22, 2013 great puzzle - and a great discussion here http://forums.xkcd.com/viewtopic.php?t=103672&p=3413662 Link to comment Share on other sites More sharing options...
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