1.

A wooden cube is painted BLUE on all six faces. The side of this cube is 4 cms. It is cut into smaller cubes of side 1 cm. Answer the following questions based on this statement. How many cubes have no face coloured?

Answer»

24
12
16
8

Solution :Remember the FORMULAE to answer these questions. X, the side (edge) of the large cube is 4 CM, the edge of the small cube x is 1 cm.
Number of cubes having no face COLOURED
= `(X/x-2)^(3)=(4/1-2)^(3)=2^(3)=8`


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