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# Qwizdom - Maths Probability

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Quick Qwizdom Quiz on Maths Probability

Quick Qwizdom Quiz on Maths Probability

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• 1. Probability
• 2. Probabilities are always between 1 and 100
• True or False
• 3. Which of these probabilities is not possible?
• A ¾
• B 0.5
• C -1
• D 73%
• 4. What is the missing value? A 1 in 12 B 1/12 C 1 out of 12 D 1:12 Colour Red Blue Green Yellow Prob. 5/12 1/12 5/12
• 5. What is the missing value? Colour Red Blue Green Yellow Prob. 0.4 0.16 0.25
• 6. What is the missing value? What is the probability of getting Yellow or Blue? Colour Red Blue Green Yellow Prob. 0.4 0.16 0.25
• 7. What is the missing value? A 1/10 B 1/2 C 1/5 D 9/20 Colour Red Blue Green Yellow Prob. 7/20 3/10 1/4
• 8. If the probability of it raining tomorrow is 0.56, what is the probability of it not raining?
• 9. If I throw a dice 300 times, how many times would I expect to get a “2”
• 10. I flip a biased coin 20 times and get 14 heads. How many heads would I expect to get if I threw it 60 times?
• 11. The probability of Sharon buying a magazine is 0.4 and the probability of buying a book is 0.2.
• What is the probability that Sharon buys both?
• 12. The probability of choosing a red counter out of a bag is 4/7 and the probability of choosing a green counter is 2/5.
• What is the probability of choosing a red counter, replacing it, and then choosing a green counter?
• A 8/35
• B 6/12
• C 34/35
• 13. Red Blue 0.8 0.2 What is the missing value? 0.7 ?
• 14. Red Blue 0.8 0.2 What are the missing letters? A RB B BR C BB 0.7 0.3 0.7 0.3 Red Red Blue Blue P(RR) P(??)
• 15. Red Blue 0.8 0.2 What is P(RR)? 0.7 0.3 0.7 0.3 Red Red Blue Blue P(RR) P(RB) P(BR) P(BB)
• 16. Red Blue 0.8 0.2 What is the probability of getting a Red followed by a Blue? 0.7 0.3 0.7 0.3 Red Red Blue Blue P(RR) P(RB) P(BR) P(BB) 0.56
• 17. Red Blue 0.8 0.2 What is the probability of getting 2 the same colour? 0.7 0.3 0.7 0.3 Red Red Blue Blue P(RR) P(RB) P(BR) P(BB) 0.56 0.24
• 18. Red Blue 0.8 0.2 What is the probability of getting at least 1 Red? 0.7 0.3 0.7 0.3 Red Red Blue Blue P(RR) P(RB) P(BR) P(BB) 0.56