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FOUR balls are selected from a bag containing 15 red and 5 blue balls. What is the probability that: (a) exactly 3 are red if the balls are replaced each time? (b) exactly 3 are red if the balls are not
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FOUR balls are selected from a bag containing 15 red and 5 blue balls. What is the probability that:

(a) exactly 3 are red if the balls are replaced each time?
(b) exactly 3 are red if the balls are not replaced?

User Heiheihei
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1 Answer

4 votes
The answer would be it’s exactly 3 are red if the balls are not replaced so B
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