A cube of 3x3x3 is painted with red colour from. All its six faces and then ot is cut into 27 cubes of 1×1×1 unit each . A cube is taken out at random .What is probability the cube is painted at three sides??
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n(s)=27.
because there are 27 pieces.
only corner pieces are painted on 3 sides
there are 8 corner pieces.
so n(e) = 8
probability is 8/27 or 0.296
because there are 27 pieces.
only corner pieces are painted on 3 sides
there are 8 corner pieces.
so n(e) = 8
probability is 8/27 or 0.296
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