Equation Rip Off

I wanna rip off O R A N G E and do an equation of the week in my signature. I wanna know what you guys think though. Should I do it or not. I forgot to mention, the first 5 people who solve and PMs me the answer get.....stuff.

Rep = stuff

 

What would it entail?

And make it reasonably challenging, please.

 

Any sort of math equation or problem. Why not. I could even get them from my math book.

 

Awesome, as long as it isn't so easy it puts me to sleep >_>

 

No. If you do it, there will be 3 users that do it.

 

Who else other than O R A N G E?

 

This guy: http://www.kh-vids.net/member.php?u=4727

 

Find the circumfrence of this circle.

 

Not on his sig. I wanna put it on my sig. (Miscommunication) Thats why I'm ripping off O R A N G E. I'm doing a ______ of the week.

 

^ Just terrible.

 

Oi. D: could you please edit that, you're making my computer and I'm sure other people's lag to hell and it's quite annoying. :/

Also, @ Sho, start it if you want to, however I'd like to point out a few things about it:
- It is a BITCH to remember what day to change it on unless you set a day that you change it on every week.
- It is also a ***** to find new ones and remember stuff
- The equation thing might be hard considering everyone on the site has had different levels of math
- Putting repwhore-ish letters in white text does not make it so it is okay to talk about rep like that
- The staff can still see white text xD
- I really didn't want this to become a fad but it isn't like I can tell you not too
- It is kind of funny to see people ask you what your word means when they don't know. (I suppose it'd be equation for you.)

Your choice dear, I thought I'd just let you know so you don't get yourself into somehting you don't want to be in. xD
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Saki you ****ed up my laptop xDD

 

I'll do it. Thanks for your input!