Best to become acquainted with noun endings via a secondary source. Duolingo should really provide some grammar information when it gets to this point in the course I think.
They do provide us grammar information. It's on the website. I wish they would make it available on the mobile app too.
I'm trying hard not to tap on the words and take a cheat look at the answers, but this is like writing a book report for something I haven't read. Some kind of info during the first lesson of every group would be nice.
so, how can we tell? Or is this another one of those things that we just have to memorize? And, thank you for that graph below, that was useful.
We can tell it's indefinite because there is nothing added to the end and we can tell it's plural because there is no article.
Is brev for like, reading a letter sent by a friend? Or is it like letters of the alphabet? Thank you!