Now this isn't a problem when we have relatively small quantity of amino acids, but what happens if we have, let's say, 50 amino acids in our protein? So we want to calculate mathematically what the probability is of determining the correct sequence by using the ethnic degradation process for protein with 50 amino acids. So there should be an O after this N. So here we have our amino acid, so here we have our protein, we have amino acid number 1234, we have five, six, seven, not shown all the way to 49 and then 50. So if we carry out the Edmund degradation process on this entire polypeptide, what is the probability that we're going to obtain a correct sequence of amino acids? Well, to calculate this probability we simply have to multiply the individual probabilities of each one of those processes. So we have zero 97 for the first process, zero 97 for the second process, zero 97 for the third process and so forth all the way to the 50th process when we basically release this final amino acid.