Question 24
Some small cubes are glued together as shown in the figure to form a bigger cube. At least how many more cubes are needed to assemble the smallest possible cube?
Diagram convention (editorial): include the hidden cubes supporting the visible columns, with no hidden gaps or extra hidden cubes. Preserve the entire pictured shape when completing the cube.
Diagram convention (editorial): include the hidden cubes supporting the visible columns, with no hidden gaps or extra hidden cubes. Preserve the entire pictured shape when completing the cube.