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One card is drawn from a well-shuffled deck of 52 cards. a) The probability that the card drawn is a king is : (i). \(\frac{1}{12}\)(ii). \(\frac{1}{13}\)(iii). \(\frac{2}{13}\)(iv). \(\frac{4}{13}\)b) The probability that the card drawn is a red eight is :(i) \(\frac{1}{52}\)(ii) \(\frac{2}{23}\)(iii) \(\frac{3}{13}\)(iv) \(\frac{1}{26}\)c) The probability that the card drawn is a face card is :(i) \(\frac{2}{13}\)(ii) \(\frac{3}{13}\)(iii) \(\frac{1}{26}\)(iv) \(\frac{1}{52}\)d) The probability of getting a queen of black suit is: (i). \(\frac{1}{26}\)(ii). \(\frac{2}{13}\)(iii). \(\frac{1}{4}\)(iv). Nonee) The probability that the card drawn is a card of spades or an ace is : (i). \(\frac{1}{13}\)(ii). \(\frac{4}{13}\)(iii). \(\frac{2}{13}\)(iv). None. |
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Answer» Total number of cards in the deck = 52. a). Total number of king card in the deck = 4. The probability that the drawn card is a king = \(\frac{Total\,number \,of\,red\,8\,card}{Total\,number\,of\,cards\,in\,deck}\) = \(\frac{4}{52} = \frac{1}{13}\) . Hence, option (ii) is correct. b). Total number of cards which shown 8 in the deck is 4 in which 2 are black and 2 are red suited. Therefore total number of red 8 cards in the deck = 2 Now, the probability that the draw card is a red eight = \(\frac{Total\,number \,of\,red\,8\,card}{Total\,number\,of\,cards\,in\,deck}\) = \(\frac{2}{52} = \frac{1}{26}\) . Hence, option (iv) is correct. c). The face cards are jack, queen and king cards, each of them have 4 quantities in the deck. Therefore, total number of face cards in the deck = 4 × 3 = 12. Hence, the probability that the drawn card is a face card = \(\frac{Total\,number \,of\,red\,8\,card}{Total\,number\,of\,cards\,in\,deck}\) = \(\frac{2}{52} = \frac{13}{13}\). Hence, option (ii) is correct. d). Total queen cards is 4 in the deck in which 2 are black suited and 2 are red suited. Therefore, total number of queen cards of black suit = 2. The probability of getting a queen of black suit = \(\frac{Total\,number \,of\,red\,8\,card}{Total\,number\,of\,cards\,in\,deck}\) = \(\frac{2}{52} = \frac{1}{26}\). Hence, option (i) is correct. e). Total number of ace cards in the deck = 4 Total number of spade cards in the deck = 13. Hence, total number of cards which are either an ace or a card of spades = 4 + 13 – 1 = 16. (∵ One ace card is shade card ) Therefore, the probability that the drawn card is a card of spades or an ace card = Hence, option (ii) is correct. |
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