**math jokes 4 mathy folks**

live. laugh. learn.

**The Glass Ball Problem**

You have two identical glass balls. When dropped from the window of a certain floor (or above) in a 100‑story building, each ball will break when it hits the ground. If dropped from a lower height, however, it will not break.

What is the optimal strategy for determining the lowest floor from which these balls will break?

In **How to Solve It**, mathematician George Polya outlined several heuristics for
solving problems. One of them is called "Variation of the Problem," in which the solver
should try to solve a variation of the problem, which will hopefully shed light on the solution of
the original problem.

If the problem on this page is too tough, consider a simpler version:

What is the strategy if you have two balls that will break from a certain height (or above) in a10‑storybuilding?

Does solving that simpler problem give you any insight as to how to solve the original problem?