“…Between equally important and slightly more important = (2,3,4) Slightly more important = (3,4,5) Between slightly more important and rather important = (4,5,6) Rather important = (5,6,7) Between rather important and quite important = (6,7,8) Quite important = (7,8,9) Between quite important and extremely important = (8,9,10) Extremely important A pairwise comparison matrix A is obtained by pairwise comparison of any two factors. Accordingly, n(n−1)/2 pairwise comparisons are required for n factors in the index system.…”