How do you know when the ending for a plural with the will be arna or erna?
Such as 'the elephants' (elefanterna) compared to 'the cooks' (kockarna).
The endings on -ar and -er for en-nouns that end in a consonant is irregular, but -ar is more common.
What is the difference between smörgåsarna and mackorna? Are smörgåsarna open-faced and the other closed?
No difference, it's just that mackorna is a more colloquial word.
why is the letter é in my little typing box thing
It's used in some loan words, basically all of them French, to show where the stress goes. Like entré for 'entrance'.
No my had been right
Spelling mistake only, tillrickarna. These seem randomly allowed or not.
I do not quite understand the rule of placing 'inte', before or after it is you wont do.