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Posted: 5/24/2005 8:51:03 AM EDT
[Last Edit: 5/24/2005 8:53:53 AM EDT by PeteCO]
I mean, whoever came up with this just did it with trial and error, or what? How would someone come up with the "procedure" to do this?

Enter the following in a calculator:

Enter the first three digits of your phone number (the exchange, not the area code)
Multiply by 80
Add 1
Multiply by 250
Add the last 4 digits of your phone number
Add the last 4 digits of your phone number, again
Subtract 250
Divide that number by 2
The result is ?
Link Posted: 5/24/2005 8:59:08 AM EDT
intersting...
Link Posted: 5/24/2005 9:11:41 AM EDT
[Last Edit: 5/24/2005 9:13:02 AM EDT by Stormtrooper]
The result is nothing I understand. What are you getting at?

Do you mean add the last 4 digits of your number as in 3456?

Or do you mean the last 4 digits as in 3+4+5+6 equaling 18?
Link Posted: 5/24/2005 9:12:29 AM EDT

Originally Posted By Stormtrooper:
The result is nothing I understand. What are you getting at?





The result is your whole phone number.
Link Posted: 5/24/2005 9:14:14 AM EDT

Originally Posted By PeteCO:

Originally Posted By Stormtrooper:
The result is nothing I understand. What are you getting at?





The result is your whole phone number.



I tried two different phone numbers and none of them worked. Maybe i am doing it wrong
Link Posted: 5/24/2005 9:17:29 AM EDT
Heh, that's kinda weird...
Link Posted: 5/24/2005 9:19:22 AM EDT

Originally Posted By Stormtrooper:

Originally Posted By PeteCO:

Originally Posted By Stormtrooper:
The result is nothing I understand. What are you getting at?





The result is your whole phone number.



I tried two different phone numbers and none of them worked. Maybe i am doing it wrong



If your number is (789) 123-4567, you use the 123 part and the 4567 part, not the area code.

The result will be 1234567.
Link Posted: 5/24/2005 9:19:45 AM EDT
Hey, I've got another great trick!

First, give me your social security number...

<­BR>



Link Posted: 5/24/2005 9:30:40 AM EDT
ok, thats weird....
Link Posted: 5/24/2005 9:32:27 AM EDT
It's Algebra
Link Posted: 5/24/2005 9:32:31 AM EDT

The way the problem is stated:

C = {[A(80) + 1]250 + B + B - 250}/2

= { 250(80)A + 250 + 2B - 250 }/2

= 125(80)A + B = 10000A + B


A = your exchange
B = the last 4 of your phone number


That's how it works.


Now take any number

- type it into your calculator, then
- type the same digits in again
(for example, 247247)
- divide by 13
- divide by 11
- divide by 7
What is the result?
Link Posted: 5/24/2005 9:33:43 AM EDT
[Last Edit: 5/24/2005 9:34:25 AM EDT by drrocket]
Calculate this algebraically.

Let x = first three numbers
let y = last four numbers

(80x + 1)*250 +y + y -250
-------------------------------- =
2

250*80x + 250 + 2y -250
-------------------------------- =
2

10000*x + y

The first three digits of your phone number times 10,000 will add four zeros to the three digits, then add the last four digits to get to your original phone number.

This is no big deal. It ain't rocket science.
Link Posted: 5/24/2005 9:35:29 AM EDT
alright, its working for me now.
Link Posted: 5/24/2005 9:36:52 AM EDT

Originally Posted By drrocket:
Calculate this algebraically.

Let x = first three numbers
let y = last four numbers

(80x + 1)*250 +y + y -250
-------------------------------- =
2

250*80x + 250 + 2y -250
-------------------------------- =
2

10000*x + y

The first three digits of your phone number times 10,000 will add four zeros to the three digits, then add the last four digits to get to your original phone number.

This is no big deal. It ain't rocket science.



Thanks. That's what I was looking for. Not only do I suck at math (I changed my major from engineering to a more friendly accounting back in college) but I don't think I could do long division anymore, much less anything else.
Link Posted: 5/24/2005 9:41:57 AM EDT
Here's a really crazy one too.

1) Type the first three digits of your phone number into a calculator.

2) Pause for dramatic effect.

3) Type in the remaining four digits.

4) ...
Link Posted: 5/24/2005 9:43:50 AM EDT

Originally Posted By Jetlag:
Here's a really crazy one too.

1) Type the first three digits of your phone number into a calculator.

2) Pause for dramatic effect.

3) Type in the remaining four digits.

4) ...



Whoa! It comes up with the phone number!!!
Link Posted: 5/24/2005 9:51:13 AM EDT
[Last Edit: 5/24/2005 9:51:54 AM EDT by Dino]
nm by the time I finished typing someone had already posted :P

Link Posted: 5/24/2005 1:14:29 PM EDT
How about the Jedi Mind Trick?


Just follow the instructions below:

DON'T scroll down too fast. Do it slowly and follow the instructions below exactly, do the math in your head as fast as you can. It may help to say the answers aloud quietly.


FOLLOW these instructions one at a time and as QUICKLY as you can!

















What is:














2+2?


















4+4?
















8+8?


















16+16?




















Quick! Pick a number between 12 and 5.

















Got it?







Now scroll down...




















The number you picked was 7, right?






Don't worry, only the weak-minded fall for it.
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