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

Ex Input:
Problem: set s contains exactly 10 numbers and has an average ( arithmetic mean ) of 6.2 . if one of the numbers in set s is increased by 7 , while all other numbers remain the same , what is the new average of set s ?

Ex Output:
6.

Ex Input:
Problem: the curved surface of a sphere is 64 cm 2 . find its radius ?

Ex Output:
4', 'd ) 9', 'e ) 7'

Ex Input:
Problem: a certain kind of necklace is made from 9 green , 6 white , and 3 orange beads . what is the maximum number of these necklaces that can be made from 45 beads of each color ?

Ex Output:
5