There are 9 women and 10 men signed up to join a salsa dance class. In how many ways can the instructor choose 9 of the people to join if 7 or more must be men? (If necessary, consult a list of formulas.) X S

Twelve people are to have their picture taken as a group. How many arrangements can there be if Mary has to be first in line and Tim last in line? Both Mary and Tim are in the group of twelve.

A basketball team contains 3 freshmen and 5 sophomores. The players are asked to line-up for a team picture. The number of ways for the players to line-up is O a hp 144 40

A ski team has five entrants in a men’s ski event. The coach would like the 1st, 2nd, and 3rd places to go to the team members. In how many ways can the five team entrants achieve the first three positions?