When you have some time to kill

Gentle Ben

Senior Member
Jan 5, 2002
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1. Grab a calculator. ( you won't be able to do this one in your
head)
2. enter the three digits of your phone number exchange (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

answer look familiar?
 
80 * 250 is 20000, so in essense you doubled the first 3 digits of your phone number and shifted it by 4 decimal places to make it 7 (or 8) digits wide. Add the last 4 digits twice and now you have your tel. no times 2. To negate all the doubling you divide by 2 in the end.

Adding 1 is also just another trick, 1 * 250 equals 250, which we negate by subtracting 250. You could have added any # instead and subtracted that number times 250, right before dviding by 2.

pretty cool :)
 
Isn't this the formula to get your phone to ring back in exactly 5 seconds after you dialed the answer to this formula into your own home phone? Therefore, your home phone calls itself at the house in exactly 5 seconds after you dialed in the answer to this formula?

When I was a kid, me and my buddy used to do that.
 
hoser1970 said:
, lol!:rolleyes:

Worked on my home phone, my cell phone AND my work phone!

I have a question:

How does the trick work, if your phone is "unlisted"...???????