10.3

I thought it was really interessting how the fraction 1/2 is equal to .50000 as well as .49999 i have never thought of that before, but it makes perfect sense.  I am still having a real hard time understanding what denumerable means exactly.  I don't understand how denumerable and uncountable are connected, or even if they are at all.  I way don't understand how every 2 denumerable sets are numerically equivalent, wouldn't that mean ALl denumerable sets are equivalent?