As discussed before, the possibility of using a no-transfer procedure will become more and more improbable for the general scheme (and indeed also for the one-element scheme) when the number of elements grows. Much more probable is the possibility of using a procedure in which only situations with one unseparated group in the eluate are permitted. Then in Equations 1 and 2 , one must add the condition n2 1. Alternatively one can also reason that the ( n - p ) elements in the resin must be divided over one unseparated group, containing ng elements and n, groups of one element. Taking n, = n - p a n d 0 n, 6 n - p , the into account that n, number of combinations of (n - p ) elements contained in one group of ni- elements is Cnk(,-p) and the total number of combinations for n - p elements (0 < n - p < n) is
