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Class 9 Maths Chapter 15 Probability Quiz 4 (25 MCQs)

Quiz Instructions

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1. Rolling a 15 on a dice is
2. In a cricket match a batsman hits a boundary 4 times out of the 32 balls he plays. In a given ball, what is the probability that he does not hit the ball to the boundary?
3. A chorus has 50 girls and 35 boys. If two are chosen at random to sing a duet, what is the probability that both will be boys? HINT:You can not have the same person twice in a duet
4. A die is rolled once. What is the probability of rolling an odd number? Your answer should be a fraction in simplest form.
5. A coin is tossed 200 times and we get:Head:112 times and Tail:88 times.Find the probability of getting head
6. Christopher picks a marble at random. Without putting the first marble back, he picks a second marble at random.
7. Find the probability of getting a head or a tail while tossing a coin.
8. A piggy bank contains 4 quarters, 18 dimes, 10 nickels, and 8 pennies. A coin is chosen at random, not replaced, then another is chosen. Find each probability.P (penny, then dime).
9. During P.E. class, one team is picking softball gloves from the class bucket. Lindsey chooses a glove first, followed by Megan.
10. P(sure event)= .....
11. A die is rolled once. What is the probability of rolling a number less than 5? Your answer should be a fraction in simplest form.
12. A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)
13. 35 students participating in a debate competition. Out of these, 13 are girls and rest are boys. A student is chosen at random. The probability that the chosen student is a boy is
14. Clara brings a box of donuts to work that contains one donut in each flavor. First the secretary chooses one. Then the office manager makes a selection.
15. A box contains 6 red balls, 10 white balls and 4 green marbles.One balls taken out of the box random.What is the probability that the ball taken out will be red green
16. If we toss a coin, getting a head or a tail are
17. In a throw of a die, find the probability of not getting 4
18. You have a bag of 17 marbles. Four are blue, 6 are green, 2 are red, and the others are yellow. What is the probability of drawing a red marble, putting it aside, and then drawing a green marble?
19. On a particular day, 30 students are present in a class and another 10 are absent. The teacher calls out attendance of a particular roll number. What is the probability that the student is absent?
20. P(A) =.4 P(B) =.55P(A intersection B) =.3Find P(AUB)
21. When using a 6-sided die, what is the probability or rolling a 3, then not rolling a 3, and then rolling an even number?
22. Two fair coins are tossed. What is the probability of getting at most one head? (Hint:Create a sample space)
23. A die is rolled once. What is the probability of rolling a 2, 3, or 4? Your answer should be a fraction in simplest form.
24. The probability of each event, when a coin is tossed for 1000 times with frequencies:Head:455 & Tail:545 is:
25. Samuel has 5 different colors of pens and 2 different colors of paper. Which model could be used to show how many different choices he has?
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