Dropping 2 glass balls
You are given 2 glass balls. The 2 balls both break at the same height. If
you are at a 100 story building, what is the minimum number of drops to find
out at exactly what height they break?
For example, the minimum number for 1 ball is 99: you drop the ball on the
1st floor, it doesn't break. 2nd floor, doesn't break. Continue until it
breaks, and that is height.