[機統] 機率，幫解
(1)two cards are randomly selected from an ordinary playing deck.
what is the probability that they form a blackjack?
That is ,the probability that one of the cards is an ace
and the other one either a ten, a jack, a queen,or a king.
(2)compute the probability that a hand of 13 cards contains
(a)the ace and king of some suit
(b)all 4 of at least 1 of the 13 denominations.
算好久，還是解不出來> <"
請會的人幫忙解答，謝謝
答案(1)0.0483
(2)a 0.2198
b 0.0324
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