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Q1. What is the probability of drawing a king from a standard deck of cards? (2023)
Solution:
Number of kings = 4. Probability = 4/52 = 1/13.
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Q2. A box contains 4 white and 6 black balls. What is the probability of drawing a black ball? (2023)
Solution:
Total balls = 4 + 6 = 10. Probability of black ball = 6/10 = 3/5.
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Q3. If a coin is tossed twice, what is the probability of getting at least one head?
Solution:
Total outcomes = 4 (HH, HT, TH, TT). Outcomes with at least one head = 3. Probability = 3/4.
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Q4. In a lottery, there are 10 tickets, and 2 are winning tickets. What is the probability of picking a winning ticket?
Solution:
Probability = Number of winning tickets / Total tickets = 2/10 = 1/5.
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Q5. What is the probability of drawing a queen from a standard deck of cards?
Solution:
Number of queens = 4. Probability = 4/52 = 1/13.
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Q6. A box contains 5 white and 3 black balls. What is the probability of picking a black ball? (2021)
Solution:
Total balls = 5 + 3 = 8. Probability of black ball = 3/8.
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Q7. In a lottery, there are 10 tickets, and 3 are winning tickets. What is the probability of picking a winning ticket? (2022)
Solution:
Probability = Number of winning tickets / Total tickets = 3/10.
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Q8. In a class of 30 students, 18 are girls. What is the probability of randomly selecting a boy? (2021)
Solution:
Number of boys = 30 - 18 = 12. Probability = 12/30 = 2/5.
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Q9. If a student is selected at random from a group of 10 boys and 15 girls, what is the probability that the student is a girl? (2023)
Solution:
Total students = 10 + 15 = 25. Probability of girl = 15/25 = 3/5.
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Q10. In a lottery, there are 100 tickets and 10 winning tickets. What is the probability of picking a winning ticket? (2023)
Solution:
Probability of winning = 10/100 = 1/10.
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