This was the last question, problem B6, on the 2013 William Lowell Putnam Mathematical Competition. None of the over 4000 students who wrote the exam succeeded in solving the problem.

This was the last question, problem B6, on the 2013 William Lowell Putnam Mathematical Competition. None of the over 4000 students who wrote the exam succeeded in solving the problem.
1 Comment
1
Mark warschauer about 7 years ago

Easy. Just put the stone in the middle