How many levels are there in duolingo lessons?

Related questions

1. Does duolingo have Icelandic?
2. How long does it take to finish a duolingo course?
3. Does Rosetta Stone have Farsi?
4. Is learning Arabic easy?
5. Is Arabic easier to learn than Farsi?
6. Can u learn Spanish in your sleep?
7. Can I learn Arabic on my own?
8. Is learning Turkish easy?
9. Did the Vikings have written language?
10. What is the best time to visit Iceland?

Tags

1. #points
2. #experience
3. #serious
4. #three
5. #regular
6. #lessons
7. #choose
8. #duolingo
9. #casual
10. #insane
11. #every
12. #lesson
13. #gives