A jar contains 5 green, 3 yellow, and 2 blue marbles. What is the probability of
Practice Questions
Q1
A jar contains 5 green, 3 yellow, and 2 blue marbles. What is the probability of picking a yellow marble?
1/5
1/4
3/10
1/3
Questions & Step-by-Step Solutions
A jar contains 5 green, 3 yellow, and 2 blue marbles. What is the probability of picking a yellow marble?
Correct Answer: 3/10
Step 1: Count the number of green marbles. There are 5 green marbles.
Step 2: Count the number of yellow marbles. There are 3 yellow marbles.
Step 3: Count the number of blue marbles. There are 2 blue marbles.
Step 4: Add the number of all marbles together: 5 (green) + 3 (yellow) + 2 (blue) = 10 total marbles.
Step 5: Identify how many of the total marbles are yellow. There are 3 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: 3 (yellow) / 10 (total) = 3/10.
Probability Calculation – Understanding how to calculate the probability of an event by dividing the number of favorable outcomes by the total number of outcomes.
Total Outcomes – Recognizing the importance of correctly counting the total number of items in a sample space.
