00:01
For this problem, it looks like we're setting up what looks to be a probability type of problem, where we're given this experiment.
00:10
This experiment involves creating two -digit sequences, where the digits are different and they're chosen from zero through four.
00:19
We're also given an event, an event that the first digit is larger than the second.
00:25
So what we need to do here, again, it's just set up.
00:28
We need to first write the sample space of, this experiment and enlist the elements of this given event.
00:37
Let's start off with the sample space.
00:40
I'm going to write down every possibility of having two different digits chosen from 0 through 4.
00:47
And i'm going to try to do this systematically so that i don't skip any of them.
00:53
To ensure that i didn't skip any of them, i went in order.
00:57
I started off with zeros.
00:59
I have 01, 02, 03, and then 0 .0 .0 .0 .3.
01:03
So notice how all of those stitches are different from each other.
01:08
I don't have any repeats, so i don't have zero, zero.
01:12
And then i went up one to one zero, one two, one three, one four...