Numbers are formed acceeding to the folloraing rulks. a. Only numbers up to 3,999 are represented. *. As in the decimal rystem, the thousands, hundreds, tens, and ones are expecsied sepafanely. c. The numbers 1 to 9 are expressed as 11 II 2 EiI 3 IV 4 V 3 VI 6 vit 7 iII 5 IX 9 As you can see, an I preceding a V of X is auberacted from the value, and you can never have more than three fss in a now