If a student is selected at random from a group of 15 students, where 9 are girl
Practice Questions
Q1
If a student is selected at random from a group of 15 students, where 9 are girls and 6 are boys, what is the probability that the student is a boy? (2023)
2/5
1/3
1/2
3/5
Questions & Step-by-Step Solutions
If a student is selected at random from a group of 15 students, where 9 are girls and 6 are boys, what is the probability that the student is a boy? (2023)
Step 1: Identify the total number of students in the group. There are 15 students.
Step 2: Identify how many of those students are boys. There are 6 boys.
Step 3: Use the formula for probability, which is the number of favorable outcomes divided by the total number of outcomes.
Step 4: Plug in the numbers into the formula: Probability of selecting a boy = Number of boys (6) / Total students (15).
Step 5: Calculate the probability: 6 divided by 15 equals 0.4.
Step 6: Simplify the fraction 6/15 to its simplest form, which is 2/5.
Probability Calculation – Understanding how to calculate the probability of an event by dividing the number of favorable outcomes by the total number of possible outcomes.
