How many smaller cubes have at least one of their faces painted green ?
A
16
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B
24
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C
28
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D
32
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E
None
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Solution
The correct option is C 32 All the cubes cut out of the face painted green in colour will have at least one of the face painted green. From one face of the cube there will be 16 small cubes. Hence, number of such cubes is 32.