trying to show my students a level 4 work. for following questions

13)7 friends run a race. What is the probability that 16) Michael is given a randomly generated work IL Alex finishes, first, Mike fourth, and Emi fifth? consisting of 4 digits (with no restriction, meaning Assuming no ties. repetition allowed and it can start with a zero). What is the probability that the computer assigns him ID with at least one repeating digit? Name: (LAST, First) 14)8 Biologists, 6 Chemists, and 6 Physicists are 17)A committee of 6 is to be selected from a class of being considered for a 7 member committee. What is 30 students, of which 20 are females. What is the the probability that at least 2 chemists are on the probability that all members of the committee are committee? males