A big-city playground has 16 floors! Each floor is connected to another by various
mechanical devices. Any even-numbered floor has an escalator up to the next ever
numbered floor. Every odd-numbered floor has a slide down to the next odd-numb
floor. Sever other floors (1, 2, 3, 5, 8, and 13) have an up-and-down chute that will
you to any other chute floor above & below. How could someone get from the 11th
to the 12th floor?
