A jar contains 4 red, 5 green, and 6 blue marbles. What is the probability of pi
Practice Questions
Q1
A jar contains 4 red, 5 green, and 6 blue marbles. What is the probability of picking a green marble?
5/15
1/3
1/5
1/2
Questions & Step-by-Step Solutions
A jar contains 4 red, 5 green, and 6 blue marbles. What is the probability of picking a green marble?
Step 1: Count the number of red marbles. There are 4 red marbles.
Step 2: Count the number of green marbles. There are 5 green marbles.
Step 3: Count the number of blue marbles. There are 6 blue marbles.
Step 4: Add the number of all marbles together: 4 (red) + 5 (green) + 6 (blue) = 15 total marbles.
Step 5: Identify how many of the marbles are green. There are 5 green marbles.
Step 6: To find the probability of picking a green marble, divide the number of green marbles by the total number of marbles: 5 (green) / 15 (total) = 1/3.
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.
Total Outcomes – Recognizing the importance of correctly calculating the total number of items in a sample space.
