Teacher: In this task, you need to provide the correct option for a given problem on probability from the provided options.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Problem: in a throw of a coin find the probability of getting a tail ? 
Options: a ) 1 / 2 , b ) 1 / 3 , c ) 1 / 4 , d ) 2 / 5 , e ) 2 / 7
Solution: a
Reason: "s = { h , t } e = { t } p ( e ) = 1 / 2 answer is a"

Now, solve this instance: Problem: what is the sum of all 5 digit numbers which can be formed with the digits 0 , 1,2 , 3,4 without repetation ? 
Options: a ) 2599980 , b ) 235500 , c ) 923580 , d ) 765432 , e ) 765434
Student:
a