So this is equal to the limit, let me switch colors, the limit as n approaches infinity, I don't like that color. Actually, let me just rewrite what we did in the last video. What is this thing right here? And we showed it at the end of the last video. n factorial divided by n minus k factorial. It was n times n minus 1 times n minus 2, all the way to n minus k plus 1. If this was 7 over 7 minus 2 factorial, we would have 7 times 6, right?