Math Stumper

DR STRANGELOVE

Registered User
Forum Member
Mar 13, 2003
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Toronto, Canada
Here is a math trick!

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?

:)
 

bjfinste

Registered User
Forum Member
Mar 14, 2001
5,462
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AZ
I have no idea how it works out (although I didn't put much thought into it), but it did work out to my phone number.
 

taoist

The Sage
Forum Member
repost1.jpg




j/k ole buddy..... :D
 

cisco

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Forum Member
Dec 1, 2000
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usa/mexico
I posted it on 3/14. Chopsticks had an in-depth answer as to how to calculate the answer.
It is pretty cool though.
 

KotysDad

Registered User
Forum Member
Feb 6, 2001
1,206
7
38
Well I am stumped as to why certain phone numbers dont work. Sure seems like they should all work if you do the equations with variables. :shrug:
 

KotysDad

Registered User
Forum Member
Feb 6, 2001
1,206
7
38
AR....

Humor me here for a second. Do your phone number again and if you're using a calculator, after each step hit the = sign before doing the next step.

If this still gives you some other number, then I am really gonna :banghead:
 

AR182

Registered User
Forum Member
Nov 9, 2000
18,654
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Scottsdale,AZ
kotysdad,

i did it again & came up with the same phone # as before but not mine. the first 3 numbers are correct, though.
 

KotysDad

Registered User
Forum Member
Feb 6, 2001
1,206
7
38
AR182 said:
kotysdad,

i did it again & came up with the same phone # as before but not mine. the first 3 numbers are correct, though.

AR,

Not sure what you're doing wrong, but something is amiss. I just wrote a quick computer program to run through all possible 7-digit phone numbers, compared the result to the original number, and they all work.
 
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