Lauren is annoyed with the x-axis."Why didn't the teacher just use the number from the table?she whined."Why count by twenties?What do you think? Help please

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?