How many wisdom teeth?

We have four, two on the top and two on the bottom. i was a really weird case but i had 3 on the top and 4 on the bottom, so 7 in total i got mine out last week, all of them, and it has been a total nightmare. Normally there are four. But there are exeptions, some people have wisdom teeth missing. Other people have surnumerary teeth, meaning extra wisdom teeth.