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 Post subject: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Mon Jul 14, 2014 7:50 pm 
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Did anyone notice this?

Actually this gives me an idea...

Would it be possible to build the world's largest ever fully functional Rubik's Cube with individual inflatable cubies?

Presumably they would tend to bulge somewhat, but perhaps if they were slightly under-inflated, and kept cubic by the balancing pressure of adjacent cubies (just like one can make a cubic bubble) then it might work?

There seems to be many companies that make custom inflatables, so perhaps we can ask them to give it a shot?

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 Post subject: Re: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Mon Jul 14, 2014 8:36 pm 
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Location: Bay Area, California
New York Observer wrote:
It's party time for the cube with 519,000,000,000,000,000,000 different combinations


I suppose that was possibly taken from the New York Post article:
New York Post wrote:
The puzzle has 519 quintillion possible combinations. That’s 519,000,000,000,000,000,000.


Note the actual number is:

? ((8! * 12!) / 2) * (3^8 / 3) * (2^12 / 2)
% = 43252003274489856000

That's 43 quintillion.

If you include the center orientations the number is:

? ((8! * 12!) / 2) * (3^8 / 3) * (2^12 / 2) * (4^6 / 2)
% = 88580102706155225088000

That's 88 sextillion.


:( :( :( :( :(

Edit: fixed the names of the numbers. Considering reassembly:

? (8! * 12!) * (3^8) * (2^12)
% = 519024039293878272000


There we go. A very misleading number to report.

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Last edited by Brandon Enright on Mon Jul 14, 2014 8:57 pm, edited 1 time in total.

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 Post subject: Re: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Mon Jul 14, 2014 8:40 pm 
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No, that's 43 quintillion (*10^18) not 43 quadrillion (*10^15).

And it's 519 quintillion IF you allow reassembly, but that's getting off topic... What about my idea? :wink:

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 Post subject: Re: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Mon Jul 14, 2014 11:42 pm 
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KelvinS wrote:
Did anyone notice this?

Well I didn't notice it, in terms of actually being there, but I did post about it on my FB page a few days ago. :)

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 Post subject: Re: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Tue Jul 15, 2014 2:48 am 
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And you didn't post it here? What a cheek! :lol:

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 Post subject: Re: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Tue Jul 15, 2014 3:06 am 
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KelvinS wrote:
And you didn't post it here? What a cheek! :lol:

Ah, most of the time I think "Who would be interested in this stuff?" At least I posted the funky rubiks leggings!

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 Post subject: Re: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Tue Jul 15, 2014 7:11 am 
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More info and videos:

http://www.youtube.com/watch?v=RRNXrxlgsF4
http://www.youtube.com/watch?v=ZStENZ71D9Y
http://on.aol.com/video/watch--giant-ru ... -518314689
http://www.rtl.be/videos/video/500192.aspx

Peace,

Skarabajo.

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 Post subject: Re: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Tue Jul 15, 2014 8:40 am 
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If the cube can be reassembled in roughly 519 quintillion ways, I'd say that's actually a pretty good attempt for the layperson doing the math. How many non-puzzlers are going to know that their are restrictions on the number of flipped edges and twisted corners and account for this in the math?

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 Post subject: Re: Giant inflatable Rubik's Cube floats down the Hudson!
PostPosted: Tue Jul 15, 2014 8:46 am 
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Presumably the person (journalist) writing the article had a tight deadline and just skimmed and copied the first/biggest number they found in the Wikipedia article on the Cube, without doing/understanding any math at all, or even reading the article properly. And then they got on with the other 30 to 40 articles they had to write that day.

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