Can I use RER ticket on Metro?

Related questions

1. Does Metro run all night?
2. What is the difference between Paris RER and Metro?
3. Is Paris dangerous at night?
4. What does RER mean in Paris?
5. Why is Paris called Paris?
6. What is the cheapest way to travel around Paris?
7. Who built Paris?
8. How long is a Paris metro ticket good for?
9. What is a RER station in Paris?
10. How do you pay for Metro in Paris?

Tags

1. #between
2. #transfer
3. #credit
4. #public
5. #vending
6. #individual
7. #carnet
8. #versa
9. #carnets
10. #buses
11. #machines
12. #stations
13. #tickets
14. #trams
15. #using
16. #coins
17. #however