Probability - Math 4 children plus
[Pages:2]Probability
1. There are m boys and 12 girls in class. What is the probability of selecting a girl at random from the class ?
2. The table below gives the marks scored by a group of students in a test. Use the table to answer the question.
Mark
0 12 3 4 5
Frequency 1 2 7 5 4 3
What is the probability of selecting a student from the group that scored 2 or 3 ?
3. What is the probability of having an odd number in a single toss of a fair die ?
4. The table below gives the scores of a group of students in an English language test.
Score
2 34 5 6 7
No. Students 2 4 7 2 3 2
If a student is chosen at random from the group, what is the probability that he/she scored at least 6 marks.
Probability
Answers
1. There are m boys and 12 girls in class. What is the probability of selecting a girl at random from the class ? 12 m + 12
2. The table below gives the marks scored by a group of students in a test. Use the table to answer the question.
Mark
0 12 3 4 5
Frequency 1 2 7 5 4 3
What is the probability of selecting a student from the group
that scored 2 or 3 ?
6
11
3. What is the probability of having an odd number in a single toss
of a fair die ?
1
2
4. The table below gives the scores of a group of students in an English language test.
Score
2 34 5 6 7
No. Students 2 4 7 2 3 2
If a student is chosen at random from the group, what is the probability that he/she scored at least 6 marks.
1 4
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