Hard
Math and Logic
10x10x10 cube painted then cut into 1x1x1s. How many have no paint?
Choose an answer
A.1,000 cubes
B.729 cubes
C.100 cubes
D.512 cubes
Answer: 512 cubes
Removing the outer layer of cubes leaves an inner cube of dimensions (10-2)x(10-2)x(10-2), which is 8x8x8 = 512.
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