Free Practice Question
PS · Problem Solving
sub-505
Probability
In a bag, there are 8 blue marbles and 2 green marbles. First, Jamie picks a marble randomly, notes its color, and returns it to the bag. Next, Taylor picks a marble from the bag at random. What is the probability that both Jamie and Taylor select green marbles?
Answer Choices
Correct answer marked belowA
2/100
4/100
Correct
C
1/5
D
3/10
E
2/5
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Explanation
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Official Explanation
Official
In a bag, there are 8 blue marbles and 2 green marbles. Jamie picks a marble randomly, notes its color, and returns it to the bag. Then, Taylor picks a marble from the bag at random. We want to find the probability that both Jamie and Taylor select green marbles. The probability of Jamie picking a green…
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Comments
2
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M
ManapFeb 22, 2025
thank you taking time to upload it!
D
DevanshApr 1, 2024
thanksss
What this question tests
What it tests
Your ability to compute probabilities of single and compound events, including 'at least one' questions.
Common trap
Forgetting to use the complement for 'at least one', or treating dependent events as independent.
Details
Difficulty
sub-505
Type
PS
Category