Question

How many cube no side painted?

• A. 0
• B. 4
• C. 8
• D. 12

Answer 1

The correct option is D 12

All the cubes at top level are painted.

Second, Third and Fourth levels from top have $12$ cubes($4$ for each) with no side painted.

And at the bottom level all cubes are painted.

So, there are $12$ cubes with none of the sides painted.

Hence, option D is correct.