Q. A cube is painted on all faces and divided into 125 equal cubes. The number of cubes having exactly one painted face is:
β
Correct Answer: (A)
54
Explanation: 125 = 5³. Cubes with exactly one painted face = 6 × (5 − 2)² = 6 × 9 = 54.
Explanation by: Mahesh Chandra
125 = 5³. Cubes with exactly one painted face = 6 × (5 − 2)² = 6 × 9 = 54.