Please answer b and c

A group consists of four men and eight women. Five people are selected to attend a conference. a. In how many ways can five people be selected from this group of twelve? b. In how many ways can five women be selected from the eight women? c. Find the probability that the selected group will consist of all women. a. The number of ways to select five people from the group of twelve is 792. b. The number of ways to select five women from the group of eight women is