If you ride the RER line from the airport in paris and get off at a Metro and RER stop can yo then tranfer for free to a metro to head to your destination . If so do you keep your ticket until the end of your Metro ride to get out.Thanks
Yes to both answers, but you won't need the ticket to exit the Metro as you do on the RER. You'll need to have in your possession, though.
Your RER ticket will be needed to pass through a series of turnstiles between the RER and the Metro. Just keep using the same ticket each time you encounter a gate. You don't need the ticket to exit the Metro, but keep it until you get outside.
thanks much