1. | A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white? |
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Answer: Option B Explanation: Let number of balls = (6 + 8) = 14. Number of white balls = 8.
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2. | One card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack, Queen and King only)? |
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Answer: Option B Explanation: Clearly, there are 52 cards, out of which there are 12 face cards.
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3. | Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is: |
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Answer: Option D Explanation: Let S be the sample space.
Let E = event of getting 1 spade and 1 heart.
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4. | A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is: |
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Answer: Option C Explanation: Let S be the sample space.
Let E = event of getting all the 3 red balls.
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5. | A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is: |
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Answer: Option C Explanation: Here, n(S) = 52. Let E = event of getting a queen of club or a king of heart. Then, n(E) = 2.
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6. | Two dice are tossed. The probability that the total score is a prime number is: |
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Answer: Option B Explanation: Clearly, n(S) = (6 x 6) = 36. Let E = Event that the sum is a prime number.
n(E) = 15.
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7. | From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings? |
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Answer: Option D Explanation:
Let S be the sample space.
Let E = event of getting 2 kings out of 4.
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8. | In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize? |
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Answer: Option C Explanation:
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