... general rule of thumb in business thatsays that 20% of the items produce 80% of the activity, while 20% of the productline produces 80% of the sales, 20 % of the customers generate 80% of thecomplaints, ... the breakdown of eachmonth into weeks by counting the number of times Friday occurs within eachmonth, e.g., Jan = 4 weeks, Feb = 4 weeks, Mar = 5 weeks, Apr = 4 weeks, May= 4 weeks, Jun = ... therefore apermutation of two elements. For example, the swapping of 2 and 5 to take thelist 12 345 6 to 15 342 6 is a transposition. In this example, if the newly ordered list of 15 342 6 was unintentional,...