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How many grains of sand vs number of Sudoku

 
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ChPicard

Joined: 12 Mar 2008
Posts: 82
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Location: Montreal, Canada

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PostPosted: Thu Mar 19, 2009 10:22 am    Post subject: How many grains of sand vs number of Sudoku Reply with quote

For the answer look at :

http://visindavefur.hi.is/svar.asp?id=4803

But we don't know how many 17 given sudoku grids are valid, because it is too complicated to solve this question.

ChPicard
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gsf

Joined: 18 Aug 2005
Posts: 408
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Location: NJ USA

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PostPosted: Sun May 24, 2009 1:00 pm    Post subject: Re: How many grains of sand are there in the world? Reply with quote

ChPicard wrote:
For the answer look at :

http://visindavefur.hi.is/svar.asp?id=4803

But we don't know how many 17 given sudoku grids are valid, because it is too complicated to solve this question.

just looked at this
was this guy guestimating grains of sand (6.63x10^22) or sudoku grids (6.67x10^21)
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ChPicard

Joined: 12 Mar 2008
Posts: 82
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Location: Montreal, Canada

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PostPosted: Tue May 26, 2009 1:43 am    Post subject: Re: How many grains of sand are there in the world? Reply with quote

gsf wrote:

just looked at this
was this guy guestimating grains of sand (6.63x10^22) or sudoku grids (6.67x10^21)


I was asking : How many valid sudoku grids?

JPS
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gsf

Joined: 18 Aug 2005
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PostPosted: Tue May 26, 2009 2:38 am    Post subject: Re: How many grains of sand are there in the world? Reply with quote

ChPicard wrote:
gsf wrote:

just looked at this
was this guy guestimating grains of sand (6.63x10^22) or sudoku grids (6.67x10^21)


I was asking : How many valid sudoku grids?

I know
I was just commenting on the weird proximity of the actual number of grids
and the guy's guess on something completely different
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angusj
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Joined: 18 Jun 2005
Posts: 406
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PostPosted: Tue May 26, 2009 3:35 am    Post subject: Reply with quote

I've changed the title of this thread to indicate it does have some (very tenuous IMHO) relevance to Sudoku. I've done this hopefully to discourage new threads with little relevance to Sudoku. (Admittedly, there's a gray line between what's relevant and what isn't.)
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