Question

d) There are nine student employees available for work during the lunch hour. Suppose one employee is needed to serve food, one employee to help the cooks, one to bus and clean the tables, one to scrub the plates and dishes before loading them to the dishwashing machine, and one to do the loading and unloading of the dishwashing machine. In how many different ways can the five tasks be assigned?

e) Same scenario as in part (d). Suppose two employees are needed to serve food, one to help with the cooks, two to bus and clean tables, one to scrub the dishes, and one to man the dishwashing machine. In how many different ways can the tasks be assigned?

Answer 1

d) Total = 9

required= 5

Diferrent no. of ways = 9C5 = 126

e) Total= 9

Required = 7

Different no. of ways =  9C7= 36