Asked by RAJANYA MONDAL · The Level field School
Answer: A. (n-2)^3
Cubes with no painted face lie fully inside, away from all six outer faces. Removing one layer from each side leaves an inner block of (n - 2) x (n - 2) x (n - 2) = (n - 2)^3 cubes. 6(n - 2)^2 counts cubes with one face painted.
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