Translation:It took twenty days.
Suddenly I feel like I'm never going to learn how to count in Japanese...
It is correct. When using "x days", the pronounciation is the same as for the ranking numbers ("X-th day of the month"). Full table can be found here: http://www.guidetojapanese.org/learn/complete/date_time
I can't figure it out either. Sounds like it starts with hatsu but it doesn't make sense.
20th, 20 days : はつか 20 years old : はたち There should be a story behind this number, but I don't know it sorry. ;)
It's the last remaining survival of the Old Japanese word for 20, pata plus the Old Japanese day counter -uka. Old Japanese didn't allow two vowels in a row (unlike Modern Japanese), so pata + -uka became patuka (modern pronunciation hatsuka)
Modern Japanese has borrowed the Chinese numbers, pretty much completely losing everything above 10 except in a handful of vestiges like this.
I've wondered about this number's story for ages, but just never got around to looking it up, lol
どうも有難うございます! : )
Something is wrong with this topic. After finishing the second lesson, I get no points and i can't pass to the next lesson. I see always the same lesson 2. The problem can be partially solved by passing a level test, but it is not what I want exactly.
It's the same for me. I found that I can bypass it by manually changing the number in the URL from a 2 to a 3, and then completing lesson 3 after that got it un-stuck just twice. I'm stuck again, but at least I can still change the URL to skip around and do some of the lessons, even though they don't credit.