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Unbelievable Math Problem

Posted: Tue Feb 28, 2006 12:10 pm
by Accountable
Here is a math trick so unbelievable that it will stump you.

Personally I would like to know who came up with this and why that person is not running the country.



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). [edit- any 7-digit number will do]

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?

Unbelievable Math Problem

Posted: Tue Feb 28, 2006 12:22 pm
by Bez
Interesting !!

Unbelievable Math Problem

Posted: Tue Feb 28, 2006 12:26 pm
by Accountable
Like I said. Lots of spare time in Alaska. :D

Unbelievable Math Problem

Posted: Tue Feb 28, 2006 1:05 pm
by sunny104
That is cool! :)

Unbelievable Math Problem

Posted: Tue Feb 28, 2006 2:46 pm
by Sheryl
Wow that was cool.

Unbelievable Math Problem

Posted: Wed Mar 01, 2006 5:20 am
by spot
Accountable wrote: Here is a math trick so unbelievable that it will stump you.

Personally I would like to know who came up with this and why that person is not running the country.That's what algebra was invented for...



((80x +1)250 +2y -250 )/2

=(2000x +250 +2y -250)/2

=(2000x +2y)/2

=1000x +y

Unbelievable Math Problem

Posted: Wed Mar 01, 2006 5:28 am
by Gillz
I don't like these myself. I get lots of things like these by email, they are clever but they aren't really that amazing, it's just maths. You can make almost anything mean anything if you really really want to.

Unbelievable Math Problem

Posted: Wed Mar 01, 2006 7:51 am
by Accountable
Gillz wrote: I don't like these myself. I get lots of things like these by email, they are clever but they aren't really that amazing, it's just maths. You can make almost anything mean anything if you really really want to.
That's the very thing that's cool about it. Somebody had the imagination and skill to build the equation. He/she has used math as an art medium.