51. Numbers (Revisited)
It was mentioned earlier that numbers that proceed nouns should take the opposite gender of those nouns. An additional rule which you need to consider is that unlike English, the noun has to be in plural only between 3-10. After that the noun has to be singular in the accusative case. This is another example of تمييز "accusative of distinction."
**إشتريتُ خمسة َ عَشرَ** قلماً **.**
I bought fifteen pencils.