The numbers 0 through 9 are used in code groups of four to identify an item of clothing. code 1083 might identify a blue blouse, size medium. the code group 2031 might identify a pair of pants, size 18, and so on. repetitions of numbers are not permitted—in other words, the same number cannot be used more than once in a total sequence. as examples, 2,256, 2,562, or 5,559 would not be permitted. how many different code groups can be designed?