00:01
Okay, so we have a committee problem here.
00:03
We're going to be establishing of the committee from seven students, and we're picking four students to make up that committee.
00:11
So in this case, we're going to be, so it looks like we're choosing a pool of four students from seven students.
00:18
So obviously there's going to be no way to repeat students.
00:22
So no repetition in this case.
00:24
And also, since we're just building a committee of four students, it doesn't really necessarily say what position they're in.
00:30
So in this case, order also doesn't matter.
00:33
We're just looking for a group of four students.
00:35
So order doesn't matter, no repetition.
00:38
This sounds like we can use a combination to solve it.
00:42
So let's go ahead and try and solve for this committee here, using a combination.
00:51
So our combination of seven students, we're picking four out of that.
00:56
And we're going to just plug this into the formula...