Four of Your Students Submitted an Entry to a Writing

Short Answer

Four of your students submitted an entry to a writing contest.There were a total of 24 entries submitted.Six of the entries will move on to the next round.
A)What is the probability that all four of your students will move on to the next round?
B)How many of your students are expected to move to the next round?
C)What is the probability that fewer of your students than expected make it to the next round than expected?