Any math whizzes here?
 

1. Key into the calculator the first 3 digits of your phone number (not
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
Is this your phone number???

no

:1orglaugh :1orglaugh Yeah, it worked. good stuff

:thumbsup

nice

Any idea how it works? I'm trying to derive an algorithm that explains it and can't get it :mad:

it worked:thumbsup

yup

It's not that difficult... When you multiply the first 3 digits by 80 and then by 250, you've basically got your XXX number to XXX0000 (because you'll divide by 2 later). You've also added 1 to the second result and multiplied that by 250, and then later subtracted 250, negating that. The adding your last 4 digits twice was negated by dividing by 2 at the end as well.

yep =)

:mad:

Stop answering "yes", of course it works, if it didn't work then your math sucks. The calculations are very simple, there's no way for it to not work.

Now someone higher me to code something, I've proven myself.

:Graucho

Fuzebox = you rock :)

Does your nickname have anything to do with Fusebox programming methodology?

Nah, it's just a lame script kiddy name I made up 10 years ago.

he didn't ask us to figure out how the equation works, he asked us if this was our # or not. really what have you proved besides not being able to read direction and follow them?

how does that work out?

remove foot from mouth and read all responses

math seriously is for fags

second time it did... weird.

when i responded to the thread i answered the question that he asked. so i was speaking for myself when i commented on fuzebox's response to the thread. thanks for trying to cheer lead from the sidelines though, next time keep your mouth shut while addressing me:thumbsup

many apologies oh master, how shall i address you next time?

nap is fine:thumbsup

So now ya can impress a chick by asking her phone number but you only need the first 3 digits:)

Tell her you can figure out the rest:)

1 * 250 - 250 = 0

Telephone numbers here in São Paulo have 8 digits, so this didn't work..... :(

too much time on your hards :thumbsup

worked for me :thumbsup

I only whizz when I have to do math

let ABCDEFG be your phone #, each letter is a digit

step 1.
ABC

step 2.
ABC * 80

step 3.
(ABC * 80) + 1

step 4.
((ABC * 80) + 1) * 250
which is
(ABC * 20000) + 250
which is
(2 * ABC0000) + 250

step 5.
(2 * ABC0000) + 250 + DEFG

step 6.
(2 * ABC0000) + 250 + DEFG + DEFG
which is
(2 * ABC0000) + 250 + (2 * DEFG)
which is
(2 * ABCDEFG) + 250

step 7.
2 * ABCDEFG

step 8.
ABCDEFG

you need the last four too.

so she would have to give you the first three and the last four, if you cant work it out from there then you are just a retard.

:1orglaugh

zero or all real numbers

If you wrote that as an equation, instead of in words, it would be very ,very obvious why it works...

right on :thumbsup

yep :thumbsup