Question

3). In how many ways can 6 students be seated in a row of 6 chairs if Jack insists on sitting in the first chair?

4). A president, a treasurer, and a secretary are to be chosen from a committee with forty members. In how many ways could the three officers can be chosen?

5). In how many ways can 7 books be chosen from a group of nine?

9). Suppose that a department contain 13 men and 15 women. How many ways are there to form a committee with 6 members if it must have strictly more women than men?

Answer 1