Primary U.S. interstate highways are numbered 1-99. Odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west. Auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. Thus, I-405 services I-5, and I-290 services I-90. It has to be done in python.

Answer:The solution in python. Output:    print("0 is not a valid interstate highway number")Explanation:h = int(input("enter highway number: ")) #take highway numberif(h>=1 and h<=99): #for primary highway    if(h%2==0):        print("I-%d is primary, going east/west" %h) #for even highway number    else:        print("I-%d is primary, going north/south" %h) #for odd highway numberelif(h>=100 and h<=999): #for auxiliary highway    aux=str(h) #convert into string for fetch the rightmost number    l=len(aux) #find the length    val = aux[l-2]+aux[l-1] #assign value of rightmost two number    h = int(val) #convert into integer    if(h%2==0):        print("I-"+aux+" is auxiliary,"+"serving I-%d, going east/west" %h)    else:        print("I-"+aux+" is auxiliary,"+"serving I-%d, going north/south" %h)elif(h==0):#for 0 highway number    print("0 is not a valid interstate highway number")else:    pass