![arXiv:math/0407326v1 [math.CO] 19 Jul 2004](http://s1.studyres.com/store/data/016678102_1-7a26a9b4445f7030b68419a5be89f8d8-300x300.png)
Quadratic Equations - UNL Math Department
... A problem that has occasionally been used in Math 300 as a Habits of Mind problem is: Example 1: An Open and Shut Case: In a certain school there are 100 lockers lining a long hallway. The lockers are numbered 1, 2, 3,..., 99, 100. All are closed. Suppose that 100 students walk down the hall in sing ...
... A problem that has occasionally been used in Math 300 as a Habits of Mind problem is: Example 1: An Open and Shut Case: In a certain school there are 100 lockers lining a long hallway. The lockers are numbered 1, 2, 3,..., 99, 100. All are closed. Suppose that 100 students walk down the hall in sing ...
