00:01
The problem tells us we have a bag with three red, two white, and two green balls.
00:05
And we are looking for the probability of pulling out without replacement two that are the same color.
00:15
So there are three ways that this could happen.
00:20
You could pull out two reds, two whites, or two greens.
00:27
And then that would satisfy that probability.
00:31
So the way to pull out two reds, we have three chances for a red.
00:38
And then once that one is pulled out, it doesn't get replaced.
00:42
So now there's two chances.
00:44
So the probability of doing this for a red would be six.
00:50
For white, we have two chances.
00:52
We pull that one out, then we have one more chance to pull a white.
00:56
So that would be two...