in reply to Perfectly shuffling a deck of cards, over and over

I got the first shuffle eq to the 9th and the second eq to the 10th .... WHY ? only 3th to 8th suffles seems to be chaotic... it is correct ?

cheers lorenzo*

PS if I make 8 shffle only I get the orderd deck!
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Re^2: Perfectly shuffling a deck of cards, over and over
by QM (Parson) on Jul 12, 2004 at 13:45 UTC
    From the Mathworld reference above:
    An ordinary deck of 52 cards is returned to its original order after 52 in-shuffles, but after only eight out-shuffles!

    -QM
    --
    Quantum Mechanics: The dreams stuff is made of

      The good news is that in the real (physical) world, it's much harder to shuffle the deck perfectly.

      There is also the additional fact that after playing a hand of anything, the deck is not in order to begin with.

      That is a little more difficult to simulate.