I have been in Paris 2 days and have mostly walked between sightseeing points so the metro is a little confusing to me.

Today i would like to visit the Zoo, Eiffel Tower, Arc de Triomphe and Moulin Rouge. I am right next to the Cluny-La Sorbonne Metro station. Can anyone confirm the best ticket(s) for me to purchase?

If I purchase the day ticket for 7 would that enable me to get to all the places I have mentioned and travel on both RER and Metro?

Thank you in advance