In this task, you need to provide the correct option for a given problem on probability from the provided options.
Q: Problem: how many positive integers less than 600 can be formed using the numbers 1 , 2 , 3 and 5 for the digits ? 
Options: a ) 48 , b ) 52 , c ) 66 , d ) 68 , e ) 84
A: 
e