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2009

2009 unit cubes are glued together to form a cuboid. A pack, containing 2009 stickers, is opened, and there are enough stickers to place 1 sticker on each exposed face of each unit cube.
How many stickers from the pack are left?

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If you enjoyed this puzzle, check out Sunday Afternoon Maths XXVIII,
puzzles about 3d shapes, or a random puzzle.

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