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In a class of 30 students, 18 are boys and 12 are girls. If a student is selecte
Practice Questions
Q1
In a class of 30 students, 18 are boys and 12 are girls. If a student is selected at random, what is the probability that the student is a girl?
2/5
1/3
1/2
3/5
Questions & Step-by-Step Solutions
In a class of 30 students, 18 are boys and 12 are girls. If a student is selected at random, what is the probability that the student is a girl?
Correct Answer: 2/5
Steps
Concepts
Step 1: Identify the total number of students in the class. There are 30 students.
Step 2: Identify the number of girls in the class. There are 12 girls.
Step 3: To find the probability of selecting a girl, use the formula: Probability = (Number of girls) / (Total number of students).
Step 4: Substitute the numbers into the formula: Probability = 12 / 30.
Step 5: Simplify the fraction 12/30. Both numbers can be divided by 6, which gives us 2/5.
Step 6: The final answer is that the probability of selecting a girl is 2/5.
No concepts available.
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