The basic rule for plural is to put 'er' after the singular form for the masculine and feminine gender. For the neutral gender, the plural is often the same as the singular. Examples: En gutt - gutter, en kvinne - kvinner, et barn - barn. Then there are a lot of exceptions you just have to learn, like En mann - menn.
i wouldnt see that coming if i wouldnt had taken swedish course here and there plurals were in plurals part, not in basic part. nothing wrong but its a good catch for new learners :)
Then the verb would come first. (At least, I think so).
Er vi ikke kvinner?