Got this wrong on multiple choice because I didn't pick "Vi ber sammanlagt hundra personer" as correct as well, but I don't recall having learned "ber". Is that another form of ask, then? Or is this a mistake?
This word has DEFINITELY not been introduced yet. I know because since starting this course I've been logging all new vocabulary in an excel file because it helps me memorize the new words.
I managed to get it right only because I was so sure the other two were wrong.
It's usually for being a part of something ("one of us" = en av oss) or for being a material of something (a plate made of porcelain = en tallrik gjord av porslin). For most other cases, it's not used.