So to demonstrate this a bit more, let's actually take a look at example number one and example number two. So in example number one we want to use the product rule, this rule here to basically determine the probability of obtaining two consecutive heads on two coin flips. So basically what that means is we have to apply the product rule. So let's use the color black. So essentially so we use the probability of the product rule to basically determine what the probability is in flipping two consecutive heads. Now if we flip the first time, what's the probability of that?