> It tests whether students can remain unintimidated in the face of difficult-looking questions. That's a very good goal. But for this problem, your success de

> It tests whether students can remain unintimidated in the face of difficult-looking questions. That's a very good goal. But for this problem, your success depends on whether you chose the same strategy that the teacher cherry-picked prices for - or just got lucky that another strategy happened to work. "Intuition" implies that the student somehow understands the structure of the problem, but the prices in the problem could be adjusted ever so slightly in such a way that the strategy you outline would lead nowhere at all. The only possible intuition to be found here is realizing that the only way to solve the problem is to throw shit on the wall until something sticks. > I won't be surprised if many fifth-graders can solve the problem in five minutes. A lot of fifth-graders could win on a scratch-off ticket in five minutes, too.