Floor tiles 50 decimeters long, 32 decimeters wide and 5 decimeters long cannot be broken. Then, if the length is 50/5= 10, then the long side will use 10 tiles. Just right. On the broad side, it is 32/5 = 6...2.

Indispensable Because it is a square brick, the square cannot be adjusted, so it is impossible not to break it in mathematical theory.

Although the whole floor space divided by the area of a brick is only an integer. But the length and width of the room cannot be adjusted, and it is impossible not to break it.