The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: the smallest value of n , for which n + 2 is not a prime number , is

Output: 2,4


Input: Consider Input: Problem: in an election between two candidates , one got 60 % of the total valid votes , 30 % of the votes were invalid . if the total number of votes was 9000 , the number of valid votes that the other candidate got , was :

Output: 2520


Input: Consider Input: Problem: a , b and c started a business with a total investment of rs . 72000 . a invests rs . 6000 more than b and b invests rs . 3000 less than c . if the total profit at the end of a year is rs . 8640 , find b ' s share .


Output: rs . 2520