And actually let's change this up and do it in the same way that we did below. So we have boy and a girl. And the reason we did this is to basically work out the pun and square correctly. So this is child number one, the possibilities for child number one, the possibilities for child number two and the possibilities for child number three. Now let's actually write out the fractional probability of each one of these events actually taking place. So we have a one half probability of this being a boy.