[MATH QUESTION] What is this I don't even....

Ghostt
Sun, 12 Dec 2010 19:54:48 +0000

Try to visualize the cube.

The smaller cubes that have red paint on them constitute the outer shell > so, imagine a cube within a cube. Forget about the red bits and concentrate on the inner cube. It’s made up of 27 small cubes > pretty straight-forward calculation here, each side is 3 cubes long. NOW imagine the red layer around it (not entirely red, technically, but this is irrelevant). Add one small cube to each side of the one you already know about–the outer layer–and you get 5.

I don’t know how else to explain it, it’s just a very easy problem if you can imagine it clearly. It’s supposed to test your three-dimensional thinking.