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13. Probability
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Q68 of 128 Page 13

All jacks, queens and kings are removed from a pack of 52 playing cards. The remaining cards are well – shuffled and then a card is randomly drawn from it. Find the probability that this card is

(i) a black face card (ii) a red card

Total number of possible outcomes, n(S) = 52 – 12 = 40


(i) Since all jacks,


Number of favorable outcomes, n(E) =



More from this chapter

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66

A bag contains cards numbered from 1 to 49. A card is drawn from the bag at random, after mixing the card thoroughly. Find the probability that the number on the drawn card is

(i) an odd number


(ii) a multiple of 5


(iii) a perfect square


(iv) an even prime number.

67

All kings and queens are removed from a pack of 52 cards. The remaining cards are well – shuffled and then a card is randomly drawn from it. Find the probability that this card is (i) a red face card (ii) a black card.

69

Red queens and black jacks are removed from a pack of 52 playing cards. A cards is drawn at random from the remaining cards, after reshuffling them. Find the probability that the card drawn is

(i) a king (ii) of red colour


(iii) a face card (iv) a queen

70

A box contains 20 cards numbered from a 1 to 20. A card is drawn at random form the box. Find the probability that the number on the drawn card is

(i) divisible by 2 or 3


(ii) a prime number

Questions · 128
13. Probability
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
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