SOLUTION: Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store manager assures you that 12 of the 50 boxes on the shelf have the secret decode
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Question 712965: Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store manager assures you that 12 of the 50 boxes on the shelf have the secret decoder ring. The other 38 boxes on the shelf have a different gift inside. If you randomly select two boxes of cereal from the shelf to purchase, what is the probability that BOTH of them have the secret decoder ring?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store manager assures you that 12 of the 50 boxes on the shelf have the secret decoder ring. The other 38 boxes on the shelf have a different gift inside. If you randomly select two boxes of cereal from the shelf to purchase, what is the probability that BOTH of them have the secret decoder ring?
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# of ways to succeed: 12C2 = 66
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# of possible pairs: 50C2 = 1225
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P(2 decoder rings) = 66/1225 = 0.0539
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Cheers,
Stan H.
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