1.

A solid cube of each side 10 cm, has been painted red, blue and black on pairs of opposite faces. It is then cut into cubical blocks of each side 2 cm. Answer the following questions. How many cubes have no face painted?

Answer»

12
10
8
27

Solution :In this QUESTION X = 10 and x = 2
Such cubes are `(X/x-2)^(3)=3^(3)=27`.


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