An athlete runs 200 miles in 4 hours. If he continues at this rate, how many miles will he travel in the next 3 hours ?
(A) 266 2/3
Ans : C
A number is formed by arranging the digits 2, 5, 9, 3 in ascending order and another number is formed by arranging these digits in the descending order. The difference between these two newly formed numbers is