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12311724
13.02.2020 •
Mathematics
6. Ten people are playing Black Jack (2 cards down for each). The dealer is using two decks. You will be the first to receive the first face up card. Your two down cards are a 2 and a 7. What is the probability that your face up card will be a face card (Jack, Queen, or King)? Suppose it is not one of these, what is the probability that the next person’s face up card will be a face card?
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Ответ:
Step-by-step explanation:
There are two decks, so total number of cards = 52*2 = 104 cards
10 people are playing, 2 cards are down for each , so total 20 cards are down
your two cards are 2 & 7
now you receive the face up cars first
what is the probability that it is a face card
Total number of face cards = 3*4*2 = 24
total number of undistributed cards = 104 - 20 = 84
So probability = 24/84 = 2/7 = 0.2857
.
Suppose if you got some other card, then in the deck still 24 facce cards are present and total number of ccards is reduced to 83
So Probability that next person's card is a face card = 24/83 = 0.2892
Ответ:
Step-by-step explanation:
24 is only one apple away from the actual total and is easily divisible by 4!
i believe 4 * 6 is 24 so 3 of the bags would have 6 and one of the bags would have 5 instead.