When you purchase goods in excess of

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Uploaded: 06.07.2016
Content: задача2.docx (20,13 kB)


When you purchase goods in excess of 500 rubles, the buyer offer a win-win lottery ticket. The raffle prizes raffled two types: the first type 70 prizes and 30 prizes of the second kind. What is the probability that the first buyer, make the purchase and get 3 raffle ticket will be awarded: a) identical prizes? b) at least two first prizes of the form? c) three prizes of the second kind?


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