00:01
Okay, we have here then five children, two boys and three girls.
00:05
I suppose then a boy was born first, a boy born second, and then the three girls followed on.
00:12
It's one way of getting two boys and three girls.
00:15
That will be a one half chance for each one.
00:18
Half chance for the boy, half the girl.
00:21
So one half then, power of five.
00:24
So one chance from 32.
00:27
So my sample space here then is 32.
00:31
That's one possible outcome.
00:34
But it could be different things.
00:37
It could be girl, boy, girl, girl, boy.
00:42
It's the exact same thing.
00:44
Also 1 .32.
00:46
I want to work out a number of ways of getting two boys and three girls...