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pitches » patches
witches » watches, switched
switches » swatches, sswitched, switch, sketches
sswitched » switched, unswitched, stitched
pitches » patches
witches » watches, switched
switches » swatches, sswitched, switch, sketches
sswitched » switched, unswitched, stitched
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by Ceccherini-Silberstein, Tullio, Scarabotti, Fabio, Tolli, Filippo
Published 2008
“...Line up a deck of 52 cards on a table. Randomly choose two cards and switch them. How many switches...”Published 2008
Cambridge University Press
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