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The Rachel Riley thread (due to popular demand) 
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Legend
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That said it is a little black dress which is a staple of many girls wardrobes.

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Mon Jul 11, 2011 9:16 pm
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It's a white dress again today - She's worn it more recently but there are some pics from 9th May.

Just a couple of numbers today. A quick one...

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and a slightly more tricky one..

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Tue Jul 12, 2011 3:25 pm
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got 1,000 in that last one


Tue Jul 12, 2011 6:16 pm
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According to the handydandy online solver tool, you can't solve that to 999, 1000 is the closest.

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Tue Jul 12, 2011 6:29 pm
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ProfessorF wrote:
According to the handydandy online solver tool, you can't solve that to 999, 1000 is the closest.

Maybe it's a flaw in the system, only 3 digits, goes for the nearest.

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Tue Jul 12, 2011 7:55 pm
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adidan wrote:
ProfessorF wrote:
According to the handydandy online solver tool, you can't solve that to 999, 1000 is the closest.

Maybe it's a flaw in the system, only 3 digits, goes for the nearest.

I didn't think there was a system. Thought it was purely a random number?

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Tue Jul 12, 2011 10:45 pm
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Fogmeister wrote:
adidan wrote:
ProfessorF wrote:
According to the handydandy online solver tool, you can't solve that to 999, 1000 is the closest.

Maybe it's a flaw in the system, only 3 digits, goes for the nearest.

I didn't think there was a system. Thought it was purely a random number?

Well, not random as such. I'd imagine the algorithm goes something like 'take N numbers from the set available (where N is between 2 and the size of the set) and apply N simple mathematical transformations (e.g. plus minus multiply divide) to those numbers. if the result is more than three digits, start again'.

Either that or it's some bloke behind the screen with a piece of paper making it up as he goes along.

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Tue Jul 12, 2011 10:57 pm
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I'm pretty sure it's just a random number. There isn't always a solution.

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Tue Jul 12, 2011 11:28 pm
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jonbwfc wrote:
Fogmeister wrote:
I didn't think there was a system. Thought it was purely a random number?

Well, not random as such. I'd imagine the algorithm goes something like 'take N numbers from the set available (where N is between 2 and the size of the set) and apply N simple mathematical transformations (e.g. plus minus multiply divide) to those numbers. if the result is more than three digits, start again'.

Either that or it's some bloke behind the screen with a piece of paper making it up as he goes along.

Jon


Given that there are only six numbers it would be quite simple to have a system where a series of "random" numbers are stored and, depending on which numbers are selected, (from the limited range on the table) someone in an office looks it up on a chart and enters the number into a PC...

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Wed Jul 13, 2011 11:02 am
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Course not all numbers are available. For example, there isn't a '34' card. Apparently there are the digits 1-10, 25, 50,75 and 100. That means the number of combinations is still quite large but significantly less than 'pick any six two digit numbers'.

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Wed Jul 13, 2011 11:10 am
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Hang on a minute...

Which "system" are we talking about?

The system that produces the target number on the TV for Countdown?
or...
The system that prof mentioned that tries to solve the problem?

I was talking about the countdown thing. i.e. there is no check when producing the number to ensure that there is always a solution. It is just random.

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Wed Jul 13, 2011 11:16 am
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It's a repeat today but it's a while since it's had an outing so..

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Wed Jul 13, 2011 3:35 pm
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Nice outfit today.

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Wed Jul 13, 2011 3:39 pm
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I can get 504...

9 x ((8 - 2) + 5 x 10) = 504

then I've got the spare 9

Can't get any closer though.

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Wed Jul 13, 2011 3:43 pm
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Ok

9x5=45
-2=43
x10=430
9x8=72

add em up. ;)

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Wed Jul 13, 2011 3:52 pm
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