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medium importance~0-1 Q in Tier 14 formulas⚡ 4 shortcuts3 subtopics

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Dice: finding opposite faces from positions

Standard die
1+6 = 2+5 = 3+4 = 7

Opposite faces of a standard die.

Painted cube cut into small cubes

Two faces painted
12(n-2)

Cubes on the edges, excluding corners.

One face painted
6(n-2)^2

Cubes in the middle of each face.

No face painted
(n-2)^3

Hidden inner cube.