A jar contains 4 green, 5 yellow, and 1 red marble. What is the probability of p
Practice Questions
Q1
A jar contains 4 green, 5 yellow, and 1 red marble. What is the probability of picking a yellow marble? (2019)
1/10
1/5
1/2
5/10
Questions & Step-by-Step Solutions
A jar contains 4 green, 5 yellow, and 1 red marble. What is the probability of picking a yellow marble? (2019)
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 is 1 red marble.
Step 4: Add the number of all marbles together: 4 (green) + 5 (yellow) + 1 (red) = 10 total marbles.
Step 5: Identify how many of the total marbles are yellow. There are 5 yellow marbles.
Step 6: Calculate the probability of picking a yellow marble by dividing the number of yellow marbles by the total number of marbles: 5 (yellow) / 10 (total) = 1/2.
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.
