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A solid cube of each side 8 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. How many cubes have no face painted? |
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Answer» Correct Answer - Option 3 : 8 Given: A solid cube of each side 8 cm Calculation: ⇒ Cube has no face painted = Inner cubes (No colour) ⇒ The total number of cubes without any colour on any side = (n - 2)3 ⇒ When n = 8/2 = 4 ⇒ The total number of cubes without any colour on any side = (4 - 2)3 = 23 = 8 ∴ The required result will be 8. |
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