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Riffle Shuffle


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10 replies to this topic

#1 TimeSpaceLightForce

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Posted 11 May 2014 - 05:55 AM

Count a deck of casino poker card face up to show to your audience that all suits are complete.

Restack and riffle shuffle repeatedly until they say enough.

Spread the deck across face down and let anyone take a card.

The card should be shown to the others (except you) to witness.

Ask for that card to be returned face down elsewhere on the spread deck.

Restack and riffle shuffle repeatedly until they ask you to stop.
SScard.JPG
What is your chance of finding the picked card?
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#2 m00li

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Posted 11 May 2014 - 10:37 AM

Isnt it just 1/n assuming the casino deck is made up of n distinct cards?


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#3 TimeSpaceLightForce

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Posted 12 May 2014 - 02:28 PM

The casino deck is made up of 52 distinct cards. 1/52 is not the maximum.

 

You can bet for a good odd by this specially when the witnesses examine the picked card carefully..


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#4 BobbyGo

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Posted 12 May 2014 - 09:59 PM

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#5 TimeSpaceLightForce

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Posted 13 May 2014 - 05:58 PM

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#6 Brainy Binary

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Posted 17 May 2014 - 03:20 PM

 

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#7 plasmid

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Posted 19 May 2014 - 04:04 AM

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#8 TimeSpaceLightForce

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Posted 20 May 2014 - 07:09 PM

 

 

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Edited by TimeSpaceLightForce, 20 May 2014 - 07:18 PM.

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#9 TimeSpaceLightForce

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Posted 20 May 2014 - 07:10 PM

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Edited by TimeSpaceLightForce, 20 May 2014 - 07:18 PM.

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#10 TimeSpaceLightForce

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Posted 20 May 2014 - 07:24 PM

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