And so this is going to be equal to two times one, which is equal to two. Now the reason why that makes intuitive sense is think about it. If you knew two of these data points, and if you knew all of the totals, then you could figure out the other data points. If you knew these two data points, you could figure out that. If you knew this data point, you knew the total. You could figure out that. If you knew this data point and you knew the total, you could figure out that.