Rubik's Cube (3x3 and 2x2)
A normal x Rubik's cube has cube pieces while a x has pieces. A x Rubik's cube has pieces.
How many cube pieces does a normal x Rubik's cube have?
Note : The pieces that are referred here are the external cube pieces. Cubes that are hidden or internal (if there are any) are not counted for this problem.
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The total number of 'external' cubes in an n by n cube is n 3 - ( n − 2 ) 3 . Here n=12. Therefore the answer is 1 2 3 - 1 0 3 =728