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?
Showing posts with label DamnArtists. Show all posts
Showing posts with label DamnArtists. Show all posts
Friday, March 27, 2015
413: 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?
Wednesday, March 11, 2015
399: 3D Tangent?
Can a line be tangent to a circle? Sure, if they're coplanar.
What if they're NOT co-planar?
What if they're NOT co-planar?
@MathCurmudgeon but beware the art teacher. They tend to think three-dimensionally. @calcdave
— sterlace (@sterlace) March 12, 2015
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