A cube of edge 5 cm is cut into cubes each of edge 1 cm. The ratio of the total surface area of one of the small cubes to that of the large cube is equal to:
Choose the correct choice from the following options
A) 1 : 25 B) 1.225 C) 1 : 52 D) 1 : 522 E) none

Rationale: sol . required ratio = 6 * 1 * 1 / 6 * 5 * 5 = 1 / 25 = 1 : 25 . answer a
Answer: A