00:01
We have a group that consists of seven men and five women.
00:05
We're going to select three people to attend a conference.
00:08
How can they do this? well, the order doesn't matter here.
00:12
So for the first part, we're simply going to get a combination of 12 because there's 12 people, and we're going to pick three.
00:19
So that would be how we'll plug that into the formula in a bit.
00:23
The next one says, in how many ways can three women be selected from the five women? so for part b, we're just looking at the women.
00:31
So from those five, we're going to pick three, and the order doesn't matter there either.
00:36
Then finally, it says the number of ways to select three women.
00:43
No, c, find the probability that the selected group will consist of all women.
00:49
So that means we need to take all those ways we pick the women over all the ways that we picked the actual groups...