In part b), they have asked for an outcome with 2blue marbles and 1red marble. So if you look at the tree diagram, you have three outcomes: RBB ,BRB and BBR. Find the probability for each outcome by multiplying across the branches . Then you have to add the probabilities together for your final answer.
Thanks for your question. Answer: If it says atleast two Red , then the probabilities of RRR, RRB, RBR , BRR outcomes should be added for your final answer. If it says 2Red only, then the probabilities of RRB, BRR , RBR outcomes should be added together for your final answer. Hope your doubt is clarified. Let me know if you have any further questions.
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Hy, thank you so very much😊🤗
But I have a little problem with the {b} answer.
In part b), they have asked for an outcome with 2blue marbles and 1red marble. So if you look at the tree diagram, you have three outcomes: RBB ,BRB and BBR. Find the probability for each outcome by multiplying across the branches . Then you have to add the probabilities together for your final answer.
@@sheghsmath
Okay, thank u so very much 💓
what will the probability of both being red be?
Thanks for your question.
Answer:
If it says atleast two Red , then the probabilities of RRR, RRB, RBR , BRR outcomes should be added for your final answer.
If it says 2Red only, then the probabilities of RRB, BRR , RBR outcomes should be added together for your final answer.
Hope your doubt is clarified. Let me know if you have any further questions.