red blood corpuscles

[Jobin James]

pardon me if this is the 
wrong newsgroup.
if so, please direct me
to the correct one.

i have 3 questions about
red blood corpuscles.
- how many RBCs does a human body have?
- how long does an RBC live?
- what happens to an RBC after it dies?
	is it flushed out of the system?

this is not a homework problem :)
i need them for a story i'm writing.
just wanted to be accurate.

thanks.