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Purple Comet Problems
2017 Purple Comet Problems
23
23
Part of
2017 Purple Comet Problems
Problems
(1)
Purple Comet 2017 HS problem 23
Source:
3/19/2020
The familiar
3
3
3
-dimensional cube has
6
6
6
2
2
2
-dimensional faces,
12
12
12
1
1
1
-dimensional edges, and
8
8
8
0
0
0
-dimensional vertices. Find the number of
9
9
9
-dimensional sub-subfaces in a
12
12
12
-dimensional cube.
combinatorics