Question 597772
If you have 7 selections, and 6 of them are taken up by apples, then the last selection must be an orange.


There are 8 apples. So there are 8 C 6 = (8!)/(6!(8-6)!) = 28 ways to select 6 apples (from 8)


There are 6 oranges. Since the there's only one spot for an orange, there are only 6 ways to select an orange.


So multiply these results to get 28*6 = 168


This means that there are 168 ways to select exactly 6 apples.