Tuesday, December 19, 2006

math

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?

5 comments:

Donna said...

I think it would have worked better if we had 7 digit phone numbers instead of 8 :)

Donna
Random Knits

noricum said...

((80x +1)250 + 2y - 250) / 2
= (250*80x + 250 +2y - 250) / 2
= 250*40x + y
= 10000x + y
= phone number

To work with 8 digit numbers, simply change the second instruction to key in the first four digits. (Or, for n-digit numbers, key in the first n-4 digits.

Katt said...

worked for me!! MAN that is creepy!!!

Katt

Katt said...

worked for me!! MAN that is creepy!!!

Katt

Cathy said...

Worked for me too.

I luuuuuuuv mathematical problems.

Cathy