A jar contains 8 red, 6 blue, and 4 green marbles. What is the probability of selecting a blue marble?
Practice Questions
1 question
Q1
A jar contains 8 red, 6 blue, and 4 green marbles. What is the probability of selecting a blue marble?
1/3
1/4
2/5
3/10
Total marbles = 8 + 6 + 4 = 18. Probability of blue marble = 6/18 = 1/3.
Questions & Step-by-step Solutions
1 item
Q
Q: A jar contains 8 red, 6 blue, and 4 green marbles. What is the probability of selecting a blue marble?
Solution: Total marbles = 8 + 6 + 4 = 18. Probability of blue marble = 6/18 = 1/3.
Steps: 6
Step 1: Count the number of red marbles. There are 8 red marbles.
Step 2: Count the number of blue marbles. There are 6 blue marbles.
Step 3: Count the number of green marbles. There are 4 green marbles.
Step 4: Add the total number of marbles together: 8 (red) + 6 (blue) + 4 (green) = 18 total marbles.
Step 5: Identify how many of the total marbles are blue. There are 6 blue marbles.
Step 6: Calculate the probability of selecting a blue marble by dividing the number of blue marbles by the total number of marbles: 6 (blue) / 18 (total) = 1/3.
