The number 519 is formed using the digits 5,1 and 9 . The three digits of this number are rearranged to form the largest possible and then the smallest possible three digit numbers. What is the difference between these largest and smallest numbers?
(A) 332
(B) 432
(C) 792
(D) 756
(E) 720

## Part B: Each correct answer is worth 6.
The possible three-digit numbers that can be formed using the digits 5,1 and 9 are: 519, 591, $951,915,195,159$.

The largest of these numbers is 951 and the smallest is 159 .

The difference between these numbers is $951-159=792$.

ANSWER: (C)