So find the probability of two parents, a female and a male, producing two children who are both female. Now essentially example number two is exactly like example number one, except instead of using tails and coin flips we're using children. So event number one is having the first child and the two outcomes are either a boy or a girl. So let's suppose the color red is the first event so we have boy or we have a girl. Event number two is blue. So we have also the same type of outcome, boy or a girl.