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Class 9 Mathematics: Probability
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MCQs on probability and experimental approach.

Class 9 Mathematics: Probability
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7 Questions

1. Two coins were tossed 200 times and the following results were obtained.
Two heads: 55
One head and one tail: 105
Two tails: 40
What is the probability of event of obtaining minimum one head?
2. 1500 drivers were selected for a study to find a relationship between age and accidents. The data is shown in the table below.
Age of drivers(in years)Number of accidents
01More than 1
18-3528532590
35-5014527778
Above 5012311859

What is the probability of being 35-50 years of age and having more no accidents?
3. 1500 drivers were selected for a study to find a relationship between age and accidents. The data is shown in the table below.
Age of drivers(in years)Number of accidents
01More than 1
18-3528532590
35-5014527778
Above 5012311859

What is the probability of being elder than 35 years of age and having at least one accident?
4. Marks obtained by a student in a test is shown in the table below.
Test no.12345
Marks8187767090

What is the probability that the student has scored more than 80?
5. A dice was thrown 500 times. Frequencies for the outcomes 1, 2, 3, 4, 5, and 6 are given in the table.
Outcome123456
Frequency788093799179

What is the probability of getting '4' as outcome?
6. 1000 families with 2 children were studied and the following data was collected.
Number of boys in the family012
Number of families270415315

What is the probability that the family has at least one boy?
7. 1500 drivers were selected for a study to find a relationship between age and accidents. The data is shown in the table below.
Age of drivers(in years)Number of accidents
01More than 1
18-3528532590
35-5014527778
Above 5012311859

What is the probability of being 18-35 years of age and having more than 1 accidents?

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