This is really cool.

email | 3-16-05

[Indy Pendance]

1. Grab a calculator (you won't be able to do this one 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 number by 2.

Do you recognize the answer?

[queenkathy]

That is really scary. How does someone come up with this stuff? Wow...

[processing please hold]

Thanks, that's the kind of explainations I can deal with. Being I only got to second grade. But I was there for three years.

[editor-surveyor]

"I'm surrounded by morons"

Have you ever studied genetics? ;o)

[Fledermaus]

Old math trick...forces you to get back to the original numbers.

There are lots of these math tricks. With only ten digits (0-9) and their relationships it's easy to do.

See the one with the symbols? You guess a two digit number, subtract the sum of the two and then it amazingly "guesses" the symbol. Take any number over 9 and subtract it's digits sum and you'll get a number equally divisible by 9. Then make sure the symbol for 9, 18, 27, 36, 45, etc. are all the same.

Accounting tool: Out of balance when reconciling numbers? If your out of balance total is equally divisible by 9 then more then you've transposed a number.

There are rules for 4, 5, 7, etc.

[editor-surveyor]

"Can I use the calculator on my computer???"

Only if you have a 'broad' band connection

[CitizenM]

You win! You gave me the best laugh of the day.

[Archon of the East]

LOL!...I think Hal has blown a gasket

[zeugma]

To follow up with more assorted, and slightly related trivia...

In the movie Almighty Bruce, Jim Carey gets paged by God with a phone number. They showed the pager a few times in the movie, and it was not using the 555 prefix (nxx) that most movies use. People were calling the number asking for God. Some were apparently serious. (No comment). One person who got several calls because of this worked at a church, and would inform the callers that they could speak to God any time, and no telephone was required. ;-) In the DVD of the same movie, you may notice that the number was change to begin with 555.

[SolidRedState]

Click here for more on morons...

[SolidRedState]

LOL!...I think Hal has blown a gasket

Dave? What are you doing, Dave?

[zeugma]

One of my favorites has always been that when you add up the digits in a number, if the result is divisible by 3, the number is too.

[paul51]

You could leave out a couple of steps and make it easier.

1. Key in the first three numbers of your phone number

2. Key in the last four numbers

There. Now I don't even need a calculator.

[queenkathy]

Jenny is my daughter's name

[null and void]

WOW! 867-5309. It's Jenny Jenny's phone number!!!!!!!

Ohhhh?

[Archon of the East]

Dave? What are you doing, Dave?

I'm going to sleep, got to get up early and go calculator shopping.

[Jaysun]

I did it in my head.

[Nataku X]

I didn't perform this trick but it's easy to see why this always will lead to your own phone number.

[SolidRedState]

I'm going to sleep, got to get up early and go calculator shopping.

Try a Texas Instruments model. LOL

[Indy Pendance]

Macho man.

[usgator]

Darn.  And there I was thinking I was so clever.