yes you can use the xbox 360 controllers on the xbox 360 slim. I use my controllers from my old xbox on my new 360 slim.
no
No; Xbox's and Xbox360's are not compatible in any way.
Every xbox360 is as old as time itself!
This depends on what kind of Xbox (Limited Edition or something), what games (and how many) and how many controllers.
They will not work on the old Xbox. But if you have a hard drive on your Xbox 360, you can play old Xbox games right on your Xbox 360, and then you can use the Xbox 360 controller to play old Xbox games.
No. The Xbox 360 doesn't have anywhere to plug in classic Xbox controllers, and no adapters are available for such a purpose. For a little additional detail regarding Xbox-and-360 interfacing, check out the inverted problem - "Can xbox 360 controllers be used on an old Xbox?", in the related questions.
You can play some original Xbox games on the Xbox 360.
No you have a used Xbox 360 and want to trade it in on a better new one. You might get a small fee as credit for your old Xbox 360 and have to pay over half the price of the new one
No because the xbox 360 controllers are more advance and have differerent functions so it will not work.
A used xbox controller costs anywhere. from $6-$20 depending on how you want the condition. And these controllers can be bought on amazon for reasonanle prices
No, it is only on the old xbox, but you can play some of the old xbox games on xbox 360 and Halo: combat evolved (halo 1) and halo 2 are two of them.