#1
Hey I got told today off some friends that they came across something on the internet that was supposed to prove some basic math theories incorrect. Apparently it's something like some guys gives some money to one guy who takes a bit then passes it on, and eventually it goes through loads of people so theres no money left, except a dollar which was missing.

If anyone knows what im talking about please could you link me to it?
#3
It's called a paradox. The last one I heard was about three guys splitting a cab, if you really think about it you can find out where they left out the missing dollar, but I can't help you find the solution to the problem you're talking about unless you post the whole thing. Anyway, the trick is that at the end the problem leaves out a dollar (or adds one in some versions of the problem) where it shouldn't. You just have to find it.