A jar contains 4 green, 5 yellow, and 6 red marbles. What is the probability of
Practice Questions
Q1
A jar contains 4 green, 5 yellow, and 6 red marbles. What is the probability of picking a yellow marble?
1/3
5/15
1/4
1/5
Questions & Step-by-Step Solutions
A jar contains 4 green, 5 yellow, and 6 red marbles. What is the probability of picking a yellow marble?
Correct Answer: 1/3
Step 1: Count the number of green marbles. There are 4 green marbles.
Step 2: Count the number of yellow marbles. There are 5 yellow marbles.
Step 3: Count the number of red marbles. There are 6 red marbles.
Step 4: Add the number of all marbles together: 4 (green) + 5 (yellow) + 6 (red) = 15 total marbles.
Step 5: Identify how many of the total marbles are yellow. There are 5 yellow marbles.
Step 6: To find the probability of picking a yellow marble, divide the number of yellow marbles by the total number of marbles: 5 (yellow) / 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 set before determining probabilities.
