Phone Number Formula - COOL
Thread Starter
|
Senior User
Joined: Dec 2002
Posts: 302
Likes: 0
From: Southern, NJ U.S.A.
Phone Number Formula - COOL
Phone Number
1. Key into a calculator the first 3 digits of your phone
number (NOT your area code).
2. Multiply by 80
3. Add 1
4. Multiply by 250
5. Add last 4 digits of your phone number
6. Add last 4 digits of your phone number again
7. Subtract 250
8. Lastly, divide by 2
Your Phone Number Should Appear
1. Key into a calculator the first 3 digits of your phone
number (NOT your area code).
2. Multiply by 80
3. Add 1
4. Multiply by 250
5. Add last 4 digits of your phone number
6. Add last 4 digits of your phone number again
7. Subtract 250
8. Lastly, divide by 2
Your Phone Number Should Appear
Senior User
Joined: May 2003
Posts: 481
Likes: 0
From: St. Petersburg, FL
simple arithmetic! 
Okay, let's take your first 3 digits...Let's say it's ABC. This number can be expressed as A-Hundreds plus B-tens plus C.
Okay, so this equals:
100A + 10B + C
When we multiple by 80 (Hmmm...I wonder where 80 came from, we'll see soon) we have:
8000A + 800B + 80C
Okay, Now we must add 1, so we have:
8000A + 800B + 80C + 1
Now we multiply by 250, so this leaves:
2000000A + 200000B + 20000C + 250
(You can now begin to see why 80 was chosen...nice round numbers that are 2 times multiples ot 10. Also, note the 250 term at the end.)
Okay, next we must add our last four digits. Let's say my last four digits are DEFG. This number is in the thousands and can be expressed as:
1000D + 100E + 10F +G
So, when we add it to what we were left with before, we have:
(2000000A + 200000B + 20000C + 250) + (1000D + 100E + 10F +G)
We add it again and now have:
(2000000A + 200000B + 20000C + 250) + (1000D + 100E + 10F +G) + (1000D + 100E + 10F +G)
This can be reduced to:
(2000000A + 200000B + 20000C + 250) + 2(1000D + 100E + 10F +G)
When we multiply through by our by two:
(2000000A + 200000B + 20000C + 250) + (2000D + 200E + 20F +2G)
(All the terms are now two times multiples of ten)
Anyway, now we subtract our 250(remember that) and the positive 250 term goes away:
(2000000A + 200000B + 20000C) + (2000D + 200E + 20F +2G)
All that's left is to divide by 2(imagine that), so we are left with:
(1000000A + 100000B + 10000C) + (1000D + 100E + 10F +G)
Voilla: Add the terms up and we have a number that looks like:
ABCDEFG
Okay, let's take your first 3 digits...Let's say it's ABC. This number can be expressed as A-Hundreds plus B-tens plus C.
Okay, so this equals:
100A + 10B + C
When we multiple by 80 (Hmmm...I wonder where 80 came from, we'll see soon) we have:
8000A + 800B + 80C
Okay, Now we must add 1, so we have:
8000A + 800B + 80C + 1
Now we multiply by 250, so this leaves:
2000000A + 200000B + 20000C + 250
(You can now begin to see why 80 was chosen...nice round numbers that are 2 times multiples ot 10. Also, note the 250 term at the end.)
Okay, next we must add our last four digits. Let's say my last four digits are DEFG. This number is in the thousands and can be expressed as:
1000D + 100E + 10F +G
So, when we add it to what we were left with before, we have:
(2000000A + 200000B + 20000C + 250) + (1000D + 100E + 10F +G)
We add it again and now have:
(2000000A + 200000B + 20000C + 250) + (1000D + 100E + 10F +G) + (1000D + 100E + 10F +G)
This can be reduced to:
(2000000A + 200000B + 20000C + 250) + 2(1000D + 100E + 10F +G)
When we multiply through by our by two:
(2000000A + 200000B + 20000C + 250) + (2000D + 200E + 20F +2G)
(All the terms are now two times multiples of ten)
Anyway, now we subtract our 250(remember that) and the positive 250 term goes away:
(2000000A + 200000B + 20000C) + (2000D + 200E + 20F +2G)
All that's left is to divide by 2(imagine that), so we are left with:
(1000000A + 100000B + 10000C) + (1000D + 100E + 10F +G)
Voilla: Add the terms up and we have a number that looks like:
ABCDEFG
Postmaster
Joined: May 2003
Posts: 4,933
Likes: 0
From: South Ga
Trending Topics
Senior User
Joined: Jun 2003
Posts: 326
Likes: 0
From: Merryland
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Posting Guru
Joined: Jul 2003
Posts: 1,750
Likes: 0
From: Lenexa, KS
I would have been even more impressed if it would have come up with the phone number without asking for the last four digits. I new something was up when you had to enter all seven digits of your number in some part of the formula. I figured all the arithmetic was just a distraction to separate the seven digits you entered. 
