Specific friends
Not every friend can be good at everything and useful for every single situation. Some people are great at parties and love to go, while others hate parties and avoid crowds at all costs. But they may be good at other things, like studying. In this case, you can use their help to pass that math exam.
Just remember that we are all people and we have our likes and dislikes. Do not try to force people to change and do something that they do not want to do. It can oftentimes end up as a disaster and that’s the last thing you want to throw into a friendship.