Math Arguments
Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.
Red and Blue Rubik
Suppose that a white Rubik's Cube is painted blue on top and bottom and painted red on the four lateral sides. The cube is then separated into its 27 smaller cubes.
How many unit cubes have at least one red face and one blue face?
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Source:
Curmudgeon
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