Bunuel wrote:
Two pieces of fruit are selected out of a group of 8 pieces of fruit consisting only of apples and bananas. What is the probability of selecting exactly 2 bananas?
Say there are\(x\) bananas and\(y\) (\(y=8-x\) ) apples. The question is\(P(bb)=\frac{x}{8}*\frac{x-1}{7}=?\) . Basically we need to find how many bananas are there.
(1) The probability of selecting exactly 2 apples is greater than 1/2 -->\(\frac{y}{8}*\frac{y-1}{7}>\frac{1}{2}\) -->\(y(y-1)>28\) -->\(y\) can be 6, 7, or 8, thus\(x\) can be 2, 1, or 0 . not sufficient.
(2)
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