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All the faces of a cuboid arc painted. It is cut by planes parallel to its faces to form unit cubes. If the number of cubes having all unpainted faces is 1001, then the dimensions of , the cuboid are
Option A is correct choice.
Because ,if we cut the cube by $$13Γ9Γ15$$ dimensions,then all the faces with the color will be out side faces of the cuboid.
So, uncolored face will stay only inside the cuboid with $$(13-2)Γ(9-2)Γ(15-2)$$ or $$11Γ7Γ13$$ or 1001 number of small cuboid.
A is correct choice.
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