Exam Question:

How many different ways are there to layer the different ingredients inside of a fully loaded bacon, turkey, ham, roast beef, cheese, lettuce, tomato, onion, cucumber sandwich?

References:

Benjamin, A. T. (2009). Discrete MathematicsDiscrete Mathematics. Chantilly, Virginia: The Great Courses.

Villanueva, J. C. (2009). How Many Atoms Are There in the Universe? - Universe Today. Retrieved February 17, 2016, from http://www.universetoday.com/36302/atoms-in-the-universe/