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A cube with a side of 3 inches is painted green and then sliced into smaller cubes with 1-inch sides. How many of the smaller cubes have exactly three painted sides?
A) 4
b) 6
C) 8
D) 10
E) 12
Answer: C
Source: Economist
A) 4
b) 6
C) 8
D) 10
E) 12
Answer: C
Source: Economist
