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please use n=7 not 6 4. (10 pts) 7 cards are selected at random from a pack of cards without replacement. What is the probability

please use n=7 not 6

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4. (10 pts) 7 cards are selected at random from a pack of cards without replacement. What is the probability that exactly three of them are numbered cards (2 through 10)? If a hand of 13 cards is dealt from the pack, what are the expectation and variance of the number of numbered cards that it contains

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