(c) 12961 А group of 11 chefs has to choose a team of four head chefs. (i) In how many different ways cun this be done if the roles of the head chefs are identical? (You should state which formula you are using and justify its use.) [2%]
(ii) In how many different ways can it be done if the role of the head chefs are all diferent? (You should state which formula you are using, and justify its use) [2%]
(iii) In how many different ways can it be done if there are two management roles for the head chefs, the second of which requires three chat? [4%]