Is this your phone number?

[Djcake]

try this out see if it works for you

Ignore your area code & using only 7 digit phone:
1) key-in the first 3 digits of your phone number into the calculator
2)multiply by 80
3) then plus 1
4) multiply by 250
5) plus last four digit of phone number
6) plus last four digit of phone number again
7) minus 250
8) divide by 2 at last
Is the answer your phone number???

 

[Huge]

 

[Inkara1]

It actually is... nice tric, especially since the last four digits of mine are 0840.

 

[flurff]

No... I must've done it wrong.

 

[Spot]

wow...yes it is!!

 

[kuulani]

holy cow ... it worked

 

[Dimurgeon]

Very nice. It was indeed mine.

 

[dimme]

it worked, nice trick!

 

[Nixy]

1) key-in the first 3 digits of your phone number into the calculator
2)multiply by 80
3) then plus 1
4) multiply by 250
5) plus last four digit of phone number
6) plus last four digit of phone number again
7) minus 250
8) divide by 2 at last
Is the answer your phone number???

((((a x 80) + 1)x 250) + 2(b) - 250) / 2

= (((80a + 1) x 250) +2b - 250)/2
= (20000a + 250 +2b - 250)/2
= 10000a + b

where a is the first 3 digits and b is the last 4

the 10000moves the first 3 digits 4 places to the left so they don't get added to the last 4 but rather land in front. any equation that ends up with (10000a + b) when simplified will work. The adding one before multiplying by 250 and then subtracting 250 (which is exactly what you just added after it is multiplied) tipped me off

 

[Noite Escura]

I bet it took you less time to find that than for me to understand what you said

 

[Nixy]

I didn't FIND it, I wrote the explanation myself...