[rules-users] Quantification of possible planner/solver solutions

Geoffrey: It is a source of fascination to me that you were able to come up with a number for how many possible planner combinations there were for each planner/solver example. For example, where this kind of calculation comes from or how to derive my own ? Example from Drools Solver Manual: Set # students # exams/topics # periods # rooms # possible solutions exam_comp_set1 7883 607 54 7 1.11000574474221096210367623e+1052