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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 two faces painted red and black and all other faces unpainted? |
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Answer» 36 Such CUBES are `1/3[12(10/2-2)]=1/3xx36=12`. |
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