Originally Posted by
tom tulpe
Also, Carnets are strictly Zone 1 only (on the RER, they're obviously good for a ride of any length on the Metro). You can't buy a carnet of point-to-point tickets.
I don't believe that's true. A carnet is just a bundle of ten tickets of the same sort - normally used to refer to t+ tickets (ie for zone 1) but also available for RER / point-to-point tickets. At least that's what ratp.fr thinks...