A bag contains 5 apples and 3 oranges. If you select 4 pieces of fruit without looking, how many ways can you get exactly 3 apples?
Added by Joan B.
Step 1
This can be done using the combination formula, which is denoted as "n choose k" or ${n \choose k}$. In this case, ${5 \choose 3} = \frac{5!}{3!(5-3)!} = \frac{5*4}{2} = 10$ ways to select 3 apples. Show more…
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