what about this?
a)11 people: 4 teachers, 2 parents, 5 students. Total number of arrangements in which teachers sit together but no teacher sits next to a student.
b) one of the students came with their parent. Find the probability that this student sits next to their parent.
btw this is on a...
a) Number of ways a 6 player soccer team out of a selection of 15 people.
b) Hence, what is probability of Player A being accepted into the team while Player B isn’t?