Question

A cube is painted on all the faces with same colour and cut into 27 smaller cubes of equal size. How many cubes are painted on 2 faces?
1. 24
2. 32
3. 28
4. 12

Answer 1

Correct Answer - Option 4 : 12

A cube is painted on all the faces with same colour and cut into 27 smaller cubes of equal size.

Clearly, the cube has been cut into 3 × 3 × 3 arrangement.

So, n = 3

By formula:

Number of cubes that are painted on 2 faces = 4n = 4 × 3 = 12

Hence, ‘12’ is the correct answer.