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18. A cube is painted red on all faces and divided into 27 smaller cubes of equal size. Now a small cube from each corner is removed . How many cubes are there which have none of their face coloured?

Answer» 18. A cube is painted red on all faces and divided into 27 smaller cubes of equal size. Now a small cube from each corner is removed . How many cubes are there which have none of their face coloured?


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