HardMath and Logic
10x10x10 cube painted then cut into 1x1x1s. How many have no paint?
Riddle
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
Hint: It's a word with 5 letters, starting with "5".
Answer
512 cubes
Why this is the answer
Removing the outer layer of cubes leaves an inner cube of dimensions (10-2)x(10-2)x(10-2), which is 8x8x8 = 512.
This riddle is filed under Expert Riddles for Adults and rated Hard.
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