Suppose there are 15 fruits in a set. We know 10 are apples and the other 5 are oranges. What is the probability that most of the fruits selected are apples? (Express as answer as a quotient of two natural numbers).
Probability of picking certain things from a set
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probability
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0In any sample? Or some specific size? – 2011-12-13
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0I am told *most* of the fruits selected. The answers happens to be $\frac{834}{1001}$. That is as much as I know for this problem. – 2011-12-13
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0This question is unanswerable without details of the selection process. – 2011-12-13
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0Please don't phrase posts as if you were assigning us homework; it's especially grating when you "order" people how to give you their answers. – 2011-12-14
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0You need to know *how many* fruit you are selecting. If you are selecting one fruit, then the odds are $\frac{2}{3}$; if you are selecting $11$ fruit, then the odds are $1$. The problem is nonsensical as written. – 2011-12-14
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The answers happens to be $\frac{834}{1001}$.
Then the missing part of your question is that five fruits are selected at random.
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0I wish I could add the 'reverse-mathematics' tag to this answer. :-) – 2011-12-14