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If a student is selected at random from a group of 20 students, 12 of whom are b
If a student is selected at random from a group of 20 students, 12 of whom are boys, what is the probability that the student is a boy?
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If a student is selected at random from a group of 20 students, 12 of whom are boys, what is the probability that the student is a boy?
3/5
2/5
1/2
1/3
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Probability = Number of boys / Total students = 12/20 = 3/5.
Questions & Step-by-step Solutions
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Q: If a student is selected at random from a group of 20 students, 12 of whom are boys, what is the probability that the student is a boy?
Solution:
Probability = Number of boys / Total students = 12/20 = 3/5.
Steps: 6
Show Steps
Step 1: Identify the total number of students in the group. In this case, there are 20 students.
Step 2: Identify the number of boys in the group. Here, there are 12 boys.
Step 3: Use the formula for probability, which is: Probability = (Number of boys) / (Total number of students).
Step 4: Substitute the numbers into the formula: Probability = 12 / 20.
Step 5: Simplify the fraction 12/20. Both numbers can be divided by 4, which gives us 3/5.
Step 6: The final answer is that the probability of selecting a boy is 3/5.
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