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 Internal & External (Posted on 2003-05-09)
Side-tracked from a slightly related problem, I derived this general set of attributes:

{8, 12n, 6n^2, n^2, n}.

The first 5 situations of this generalisation are:

[8, 0, 0, 0, 0],
[8, 12, 6, 1, 1],
[8, 24, 24, 4, 2],
[8, 36, 54, 9, 3],
[8, 48, 96, 16, 4].

What does this set of attributes describe?

(Attributes #1 & #4 may provide clues. Also, take note of the Title.)

 See The Solution Submitted by brianjn Rating: 3.1667 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
 re(2): A Painted Cube | Comment 12 of 15 |
(In reply to re: A Painted Cube by brianjn)

Consider the n+2 size painted cube with all of the all white cubes removed. n^3 cubes are removed leaving a shell white on the inside and red on the outside. n^2 then refers to the number of cubes on one face which can be seen from the center of the hollowed out cube.
 Posted by Brian Smith on 2003-05-14 04:34:11

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