Can you help me?? I don't remember learning this in 7th. I'm trying to help my little sister. She decided to wait till later to do it now if she doesn't do it she is grounded. She just started school so I'm trying to help. Plz I need all the answers asap.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?