A wooden cube is painted completely red on all six of its faces. It is then sliced evenly into 27 smaller, identical cubes (3x3x3). How many of the smaller cubes have paint on exactly zero of their faces?
1 cube
The only cubes with zero painted faces are the ones completely hidden in the interior. In a 3x3x3 cube, the core is a single 1x1x1 cube located right in the center, untouched by the exterior paint.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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