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# probability tree help watch

1. "A jar contains 2 red 1 blue 1 green. 2 beads are taken without replacememt. Draw a tree diagram to illustrate all the possible outcomes."

Is this right?
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2. (Original post by amaraub)
"A jar contains 2 red 1 blue 1 green. 2 beads are taken without replacememt. Draw a tree diagram to illustrate all the possible outcomes."

Is this right?
A couple of comments:

* The question refers to two beads taken without replacement, so the third tier of the tree is not needed.

* The individual probabilities look OK, but at the end of each second tier branch you should include the overall probability for the branch, which is (first tier prob) x (second tier prob) in each case. You should check that these add up to 1.
3. you have done 3 beads not 2
4. (Original post by old_engineer)
A couple of comments:

* The question refers to two beads taken without replacement, so the third tier of the tree is not needed.

* The individual probabilities look OK, but at the end of each second tier branch you should include the overall probability for the branch, which is (first tier prob) x (second tier prob) in each case. You should check that these add up to 1.
Just realised it said 2 not 3 wow im a fish. thanks!
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