Question 1187653
20C4 are number of ways to choose 4 from 20.
8C4 are the number of ways to pick 4 bananas from 8. 
8C4*12C0/20C4. The 12C0 (=1) means there is one way to choose no peaches
=0.0144.
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Second way
(8/20)(7/19)(6/18)(5/17)=0.0144
probability of choosing a banana on first, second, third, and fourth choice.