Question

How many cubelets are painted with exactly 2 colours

Answer 1

Answer:

No. of edges = (No. of vertices) + (No. of facees) - 2.

A cube has 12 edges. 8 edges, each edge having 10 cubes will have 2 sides painted.

Answer 2

$<font color=red>Number of edges=(Number of vertices) +( Number of faces )-2</p><p>$

$<font color=green>A cube has 12 edges . 8 edges,each edge having 10 cubes will have 2 sides painted$