How many cubes will have at least three sides painted ?

Question

Q. How many smaller cubes have at least three of their faces painted?

Answer 1

Four (corner) cubes in the top layer and four (corner) cubes in the bottom layer have three sides painted. There are no such cubes in the middle layer. Hence, there are 8 such cubes.

How many cubes will have at least three sides painted ?

The correct option is D 2Four (corner) cubes in the top layer and four (corner) cubes in the bottom layer have three sides painted. There are no such cubes in the middle layer. Hence, there are 8 such cubes.

The correct option is D 2
Four (corner) cubes in the top layer and four (corner) cubes in the bottom layer have three sides painted. There are no such cubes in the middle layer. Hence, there are 8 such cubes.