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This month:
Stage 1&2
Stage 2&3
Stage 3&4
Stage 4&5
ACE, TWO, THREE...
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Stage: 2 and 3 Challenge Level:
Take a look at this video.
Full Screen Version
(requires Flash Player 9)
Can you perform the trick?
Can you perform it in a different language?
Published October 2007.
Help With Mathematical Display