Question 6
In a $3\times3\times3$ cube made of 27 small cubes, 26 cubes are visible. How many small cubes are visible in a $6\times6\times6$ cube?
Interpretation: Visible means having at least one face on the exterior, considering all six sides of the large cube.
Interpretation: Visible means having at least one face on the exterior, considering all six sides of the large cube.