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    prettyinpinkgirl's Avatar
    prettyinpinkgirl Posts: 2, Reputation: 1
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    #1

    Jun 2, 2007, 10:57 AM
    Calculating Probabilites using a Tree Diagram
    Two identical contaniers contain marbles. Container 1 has 2 white marbles and one red marble. Container 2 has one white marble and one red marble. Suppose you select a container at random and then draw out a marlbe. What is the probability of drawing a white marble?

    For answering my question I used a tree diagram, and for my answer I got 3 out of 5. Is this right?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Jun 2, 2007, 01:04 PM
    I see you posted this twice. Here's how you do these types of problems.

    Forget the tree diagram. Do it this way.



    Maybe now since I showed you, you can tackle other similar problems. Okey-doke?
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