There are m boys and 12 girls in a class. What is the probability of selecting at random a girl from the class?

Assessment: WAEC SSCE - General Mathematics - 2004 (Objective) Subject: General Mathematics

Question 1 Report

There are m boys and 12 girls in a class. What is the probability of selecting at random a girl from the class?
Answer Details
The probability of selecting a girl at random from the class is the ratio of the number of girls in the class to the total number of students in the class. Given that there are m boys and 12 girls in the class, the total number of students in the class is m + 12. Therefore, the probability of selecting a girl at random is: \begin{align*} \frac{12}{m+12} \end{align*} Therefore, the correct option is (c) \(\frac{12}{m+12}\).
Read lesson note on Probability (WAEC)
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