Q. A cube of edge 10 cm is painted on all faces and cut into 1000 equal small cubes. The number of small cubes having no painted face is:
✅ Correct Answer: (A)
512
Explanation: 1000 = 10³ small cubes. Inner cubes = (10 − 2)³ = 8³ = 512.
Explanation by: Mahesh Chandra
1000 = 10³ small cubes. Inner cubes = (10 − 2)³ = 8³ = 512.