Probability-Tree Diagram- Without replacement

This video will help you understand how to draw a tree diagram to find the probability of events in a no replacement condition.

[@StaceySankoh]

Hy, thank you so very much😊🤗 But I have a little problem with the {b} answer.

[@sheghsmath]

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.

[@StaceySankoh]

@@sheghsmath Okay, thank u so very much 💓

[@thobimashitisho2125]

what will the probability of both being red be?

[@sheghsmath]

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.