a solid cube of each side is 8cm has been painted red blue black on opposite sides then it cut into 2cm cubical cubes then how many cubes have no face painted
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Step-by-step explanation:
Total no of blocks = (8/2)×((8/2)×(8/2)= 64
Three coloured blocks = corner blocks = 8
Two coloured blocks (red+blue)= 8
Two coloured blocks (red+black)= 8
Two coloured blocks (blue black) =8
Only red = 8, only black= 8, only blue = 8
No coloured blocks = 8
Total 8+8+8+8+8+8+8+8= 64
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