Answer:
1. French - Bonjour
2. Spanish - Hola
3. Italian - Bon Giorno
4. German - Guten Tag
5. Chinese - Ni hao
6. Irish - Dia Duit
7. Hindi - Namaste
8. Russian - Zdravstvuite (pronounced Zdra-stvooy-tyeh)
9. Greek - Yia sou (Ya-soo)
10. Czech - Dobry rano
11. Japanese - Ohayou gozaimasu (pronounced O-ha-yoh go-za-ee-mas)
12. Hebrew - Shalom (this is used for hello, goodbye and peace)
13. Arabic-based languages - Marhabah
14. Swedish - Hej
15. Dutch - Goedendag
16. Swahili - Jambo
17. Vietnamese - Chao
18. Korean - Ahn-yeong ha-seyo (Formal) or Ahn-yeong (Informal) or Yoboseyo (Picking up the Phone)
19. Portuguese - Bom dia (Good Morning)
20. Finnish - Hyvää päivää
21. and yeah you can't forget English- Hello, Hi, Hey.
22. Tagalog - Kamusta (How are you) or Mabuhay (Good Life) are the closest things to Hello.