【17】Figure A is a large cube composed of 125 small cubes. Some of the small cubes are removed from this large cube, with the method being: all small cubes from one face to its opposite face are removed. The black part in Figure B shows the situation after removal. Then, in Figure B, a total of ( ) small cubes have been removed.



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【考点】Overlap Problem
【Analysis】The total number of small cubes: $5 \times 5+5 \times 5+3 \times 5-3-1-15-3-1-2=65-16=49$.
【Answer】49