Mock AIME 2 2006-2007 Problems/Problem 15
Problem
A 
cube is composed of 
unit cubes. The faces of 
unit cubes are colored red. An arrangement of the cubes is 
if there is exactly 
red unit cube in every 
rectangular box composed of 
unit cubes. Determine the number of colorings.
Problem Source
4everwise did not write this problem. The souce cannot be revealed at this moment, as the contest is still running.
