There're 7 seniors and 3 juniors in the statistics club, and team of 5 will be radomly chosen to attend the Joint Statistical Meetings in San Diego.
a) Determine the probability that all 3 juiors are picked in this team of 5?
b) Determine the probability that none of the juiors are picked in this team of 5?
c) Determine the probability that 2 of the juniors are picked in this team of 5?