The Dink Network

check it out
http://digicc.com/fido/

How does that work??

Ok, here's what I've figured out. Any digit you use, and then jumble always has a number that together equals a multiplication of 9 (9, 18, ...). Nine's a special number and is used to create tricks like this - for example, for the Dutch people: our old biljets of 10 guilder also use this technique of nines for the serialnumber each biljet has.

Anyway, examples:

1234 jumble
4321

4321 - 1234 = 3087
3087 = 3 + 0 + 8 + 7 = 18 (= 2*9)

3951 - 1935 = 2016
2016 = 2 + 0 + 1 + 6 = 9 (= 1*9)

You're not allowed to use zero because it can't handle that number when calculating the number you've circled. It can't see the difference between 2016 and 2916 because both are a multiplication of 9. First one is 1*9 and second is 2*9.

That is, leave the zero away and it can't see which multiplication it should use.

So, all it has to do is to calculate the sum of the numbers, see if it's less or more than 9. If less, then the number is 9-[given numbers]. If more, then the number is 18-[given numbers].

Well, here I am a grown woman and I still don't get it.*hangs head in shame* I was with your explanation all the way till this :
So, all it has to do is to calculate the sum of the numbers, see if it's less or more than 9. If less, then the number is 9-[given numbers]. If more, then the number is 18-[given numbers].

Using your figures of :
1234 jumble
4321

4321 - 1234 = 3087
3087 = 3 + 0 + 8 + 7 = 18 (= 2*9

The next step is pick a number other than zero. Say I pick =7

How does it calculate to get the number 7 that I chose?
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Edit:BTW
Does everyone know that whatever 9 is multiplied by, the answer will be a combination totaling 9(s)

Well, if you calculate the sum of each number you can possibly get, it's always either 9 or 18. So, for example with that 3087 number, it has a seven in it and you picked 7. So, you enter in that box: 308. If you make the sum of that, it's 3 + 0 + 8 = 11. Now this is more than 9 so the total of the four digits has to be 18. Then 18 - 11 = 7 and that's the number you've picked.

Wow you're fast with the pen or keyboard in this case. I barely finished typing.

And Ooooohh! Now i get it. You're one smart feller.

Here's the link :

http://digicc.com/fido/

Well, that theory starts falling apart after a while. For example, if you pick:

(radical)36921 - (radical)32169

Well, you can't input the actual value into the box, so you have to go with the (closest) decimal value, 12.7911946384.

I circled the seven. It came back 8. I have defeated the entire purpose of that junket. MWAHAHAH!

EDIT: Another Example:
3212 - 3121 (Answer is 91)
Circle the nine.

Dumb ass

Edit: nevermind the following (between []), it indeed works with more than 3 or 4 digits: [first of all, you can only take numbers with 3 or 4 digits so that 36921 or 32169 are completely wrong]. Then, you never end up with a decimal value because it's a simple substraction. And then, 3212 and 3121 do not have the same digits in them. Hehe

The theory is correct as correct can be

First of all, you can only take numbers with 3 or 4 digits

Actually Simeon it will work with any amount of numbers and you can use however many you want to try. It still works. It remains a simple calculation problem.
My new magic number is now 9.

2 Pints of Nethergate IPA + 1 pack of Brannigans Beef and Mustard crsips
2 X &2.20 = &4.40
&4.40 + 45p = &4.95.

Only maths I need, and it comes to just under a fiver. Excellent.

Actually Simeon it will work with any amount of numbers and you can use however many you want to try. It still works. It remains a simple calculation problem.

Ah, indeed.

And then, 3212 and 3121 do not have the same digits in them

What in bloody hell are you saying!?

What in bloody hell are you saying!?

3212 has a 3, twice a 2 and once a 1.
3121 has a 3, twice a 1 and once a 2.

See?

Don't distress, Merlin. Everybody has done that a few x's before. It's just a little trick the brain plays on you. However for those that has it happen more often, they should be checked. I can't remember the exact word for this type of thing but somebody will know what it's called.

Poor Merlin and his disnumeria