Yes, of course you can.
You say "Happy new year!", or just in shorter versions, "You too"
You can say, 'Thank you! And Happy New Year to you too!'when receiving a 'Happy New Year' wish from someone.
yes
Happy new year! = Gott nytt år! (Actually "Happy" is "Glad" in swedish, but you don't use it here)
Thank you! You too!
heureuse nouvelle année happy new year too u! from tae yeon kwon!
You should say "happy new years to you too!" because that is polite.
akimashite omedotto gozaimasu this is the specific greeting only for new year
Althougth I can't remember the exact translation, You say it (Gaung hey faut choy) which is what you say when you want to say Happy Chinese New Years in Cantonese, im Mandarin can't remember exactly, but it sounds almost alike, people who speak it would know what you mean too.
"feliz año nuevo a ti tambien"
Saying "ditto" is a way of repeating what someone has just said without having to actually say it. A: "Be careful." B: "Ditto." (you be careful, too) A. "Happy New Year." B: "Ditto." (Happy New Year to you, too)
I'm happy too in Spanish is Estoy contento también.