A cube is painted red on all sides is cut into 125 equal small cubes. a small cube when picked up is found to show red colour on one of its face. then what is the probability that two more faces show red
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The cube which has been cut out will be of the any one of surfaces so it will have one side painted because only the surfaces have been coloured not the middle portion.
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Cubes which are not painted will lie inside the bigger cube. This is represented by the shaded region.
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