Answer:
6
Explanation:
Okay, let's keep in mind that there are 30 viola players and 36 violin players. For now, we can use the T-Chart to define the greatest number he can have in each class.
30 36
------------ ------------
1 | 30 1 | 36
3 | 10 2 | 18
5 | 6 3 | 12
6 | 5 6 | 6
As you can see, the greatest number in both charts is the number 6 so in conclusion, 6 is the greatest number.
Hope this helped!