form the greatest 4 - digit number using the given digits :

5 , 4 , 0 , 3

form the greatest 4 -digit number :

3 , 8 , 7

(use one digit twice)

make the smallest 4 -digit number using the given digits:

9 , 0 , 5

(us one digit twice)

build a number using the instructions :

7 should be in the 3^rd digit

8 should be in the 1^st digit

9 should be in the 2^nd digit

the roman numeral for 73 and 92 respectively

what is the time now and what are the roman numerals used here