Friday, July 17, 2020


I had to explain this one to a ton of people on Facebook.  I got it on the first try.  The guy who posted said that it took him 6 or 7 tries.

What I don't like about these problems is that they change the pictures in the last line, requiring us to infer the values and confusing the solver. It is not just a matter of simple algebra.  

Best wishes,

John Coffey