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In a class of 30 students, 18 are girls. What is the probability of randomly sel
Practice Questions
Q1
In a class of 30 students, 18 are girls. What is the probability of randomly selecting a boy? (2021)
3/5
2/5
1/2
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Questions & Step-by-Step Solutions
In a class of 30 students, 18 are girls. What is the probability of randomly selecting a boy? (2021)
Steps
Concepts
Step 1: Identify the total number of students in the class, which is 30.
Step 2: Identify the number of girls in the class, which is 18.
Step 3: Calculate the number of boys by subtracting the number of girls from the total number of students: 30 - 18 = 12 boys.
Step 4: Write down the total number of boys, which is 12.
Step 5: To find the probability of selecting a boy, divide the number of boys by the total number of students: 12 / 30.
Step 6: Simplify the fraction 12 / 30 to its simplest form, which is 2 / 5.
No concepts available.
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