In a class of 30 students, 18 are boys and 12 are girls. What is the probability

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Question: In a class of 30 students, 18 are boys and 12 are girls. What is the probability of randomly selecting a girl?

Options:

Correct Answer: 2/5

Solution:

The probability of selecting a girl is the number of girls divided by the total number of students, which is 12/30 = 2/5.

In a class of 30 students, 18 are boys and 12 are girls. What is the probability of randomly selecting a girl?

In a class of 30 students, 18 are boys and 12 are girls. What is the probability of randomly selecting a girl?

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 randomly selecting a girl is 2/5.

Probability – The likelihood of an event occurring, calculated as the number of favorable outcomes divided by the total number of possible outcomes.
Basic Arithmetic – The ability to perform simple calculations, such as division and simplification of fractions.