00:01
Okay, so here's a question that's going to require a large sample space because there's so many outcomes, but our goal is to determine the probability of having one girl and three boys.
00:17
So we want g, b, b, some combination of this.
00:25
So here are the possible outcomes.
00:27
We could have all four b boys.
00:30
We could have boy, boy, boy, boy, boy, boy.
00:45
We could do boy, boy, girl, boy, boy, boy, boy, we could do boy, boy, boy, girl, boy, boy, boy, boy, boy, boy.
01:09
Boy, girl, girl, boy, girl, boy, boy, boy, boy.
01:19
Let's see what else...