00:01
So in this question we have like three people here, john, dominic and marco.
00:07
And we need to select like two of them to go to a stats conference.
00:12
And they are going to be random select using a hat in this case.
00:18
So first in item a, we should say what are the possible options that we can have.
00:23
So because we are always selecting two, this means that if you select in this case john and domney, this will be one pair and this is already like a possible value that we can select from.
00:35
The other possible combination is that dominic and marco will go to the conference or we can have john and marco.
00:45
Why we don't repeat, for example, d and j, m and d and j, because this is the same.
00:54
Both results here are saying that john and mark will go and these are saying that dominic and marco go and this is saying that john and dominic will go.
01:04
So because they are the same, we don't need to repeat.
01:07
So we only have three options here.
01:08
We don't have six because the other three are the same.
01:12
So we have these three because we need to select like two people to go.
01:16
So each one of these pairs they represent a possible value out of the, in this case, simple space.
01:26
So okay, now that we have this, this means that in item a, the correct answer will be letter b.
01:31
In item b, we should say what is the probability that john and dominic will go to the conference...