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Class 9 Maths Chapter 15 Probability Quiz 1 (25 MCQs)

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1. The probability of Asher's soccer team winning its next game is 7/10. What is the probability of not winning their next game?
2. A die is thrown 300 times and odd numbers are obtained 153 times. Then the probability of getting an even number is
3. A die is rolled once. What is the probability of rolling a number less than 5?
4. A die is rolled once. What is the probability of rolling NOT a 4? Your answer should be a fraction in simplest form.
5. If P(E) = 0.44, then P(not E) will be:
6. A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
7. A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Marbles are taken one at a time without replacement. P(both marbles are purple)
8. 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 green marble, putting it aside, and then drawing another green marble?
9. A piggy bank contains hundred 50 p coins, fifty rs.1 coins, twenty rs.2 coins and ten rs.5 coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin will not be a 50 p coin?
10. In a class, there are x girls and y boys, a student is selected at random, then find the probability of selecting a boy.
11. A number is chosen at random from 1 to 10. Find the probability of not selecting a multiple of 3.
12. There are 5 red roses, 3 yellow roses, and 8 white roses in a tray. If Stephanie picked 2 roses one after the other without replacing, then what is the probability of picking a white rose first and a red rose next?
13. A number is chosen at random from 1 to 10. Find the probability of a 9 or smaller.
14. The probability of each event lies between:
15. Find the probability of rolling factors of 12.
16. Find the probability of each set of independent events.flipping a tail on a coin and spinning a 5 on a spinner with sections of equal area numbered 1-5.
17. In the game that Tony is playing, there is a 1/8 chance the spinner will land on red and a 3/8 chance that the spinner will land on yellow. What is the probability that Tony will NOT spin red, then will spin red?
18. Allie downloads a song from an online service. A few minutes later, a customer in another city searches for a song on the same site.
19. A basket contains four apples and six peaches. You randomly select one piece of fruit and eat it. Then you randomly select another piece of fruit. What is the probability that both pieces of fruit are apples.
20. If A is any event in S and its complement is A' then, P(A') is equal to
21. Find the probability of rolling 12 from two dices.
22. The possible outcomes of an experiment are called .....
23. Find the probability of not rolling factors of 18.
24. There are seven boys and seven girls in a class. The teacher randomly selects one student to answer a question. Later, the teacher randomly selects a different student to answer another question. What is the probability that the first student is a boy and the second student is a girl?
25. IfP (event E) = 0.47, then find P(not E).
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