Company A has 13 employees, 8 of whom belong to the union. If 4 people work any one shift, and the union contract specifies that at least 4 union members work each shift, then how many different combinations of employees might work any given shift? Pick one.
A) 56 B) 231 C) 336 D) 350 E) 406
Looks easy: -- 8C4*4C1 + 8C5 --350 (350).
<result>D</result>
Company A has 13 employees, 8 of whom belong to the union. If 4 people work any one shift, and the union contract specifies that at least 4 union members work each shift, then how many different combinations of employees might work any given shift?