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Amazing Math Trick


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9 replies to this topic

#1 Eyesee

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Posted 07 January 2011 - 06:53 PM

1. Grab a calculator (you wont be able to do this in your head)
2. Key in the first three digits of your phone number (not the area code)
3. Multiply by 80
4. Add 1
5. Multiply by 250
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again
8. Subtract 250
9. Divide by 2

Do you recognize the number?
In the beginning there was the command line.

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#2 PaedragGaidin

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Posted 10 January 2011 - 12:50 AM

Okay, that is sweet! :thumbup2:

#3 Orange Blossom

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Posted 14 January 2011 - 12:16 AM

Oh, my
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#4 Martel

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Posted 14 January 2011 - 12:49 AM

The first time I missed a step and got another number very similar to the correct outcome.

I thought..hey, how did they know the number to the Oriental carry out? :woot:


That is proof that there is life on other planets feeding us just enough info to keep us in check.

#5 Blade

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Posted 14 January 2011 - 01:15 AM

This is clever. :)

Spoiler alert for those who want to remain mystified!

Spoiler


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#6 Galadriel

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Posted 14 January 2011 - 01:06 PM

lol @ Oriental takeout. That's a neat trick.
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#7 Eyesee

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Posted 14 January 2011 - 02:56 PM

Anyone tested this with an overseas phone number yet?
Im just curious if it works with those as well.

I found this in an archive file from back in my college days.
Dont have the foggiest idea how or why it works but you sure can amaze your friends with it!
In the beginning there was the command line.

#8 myrti

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Posted 14 January 2011 - 04:06 PM

Check out Blade's spoiler. :wink: It will work with any 7 number phoene-number. So it's not working with German cellphones as those have 8 digits.

regards myrti

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#9 Eyesee

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Posted 14 January 2011 - 05:12 PM

I saw that spoiler button earlier but didnt bother to click on it.

It makes perfect sense when you see the explanation.
Darn, I always thought it was those magic calculator Gremlins!
In the beginning there was the command line.

#10 dark messenger

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Posted 14 January 2011 - 07:18 PM

Doesnt work uk =[ oh well :P




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