A bag contains 9 blue and 12 green marbles. You are asked to select two marbles from the bag.  The first marble selected will not be placed back into the bag.   Construct a probability tree, indicating the various possible outcomes that may occur, and each of their probabilities (as simplified fractions).

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A bag contains 9 blue and 12 green marbles. You are asked to select two marbles from the bag.  The first marble selected will not be placed back into the bag.

 

Construct a probability tree, indicating the various possible outcomes that may occur, and each of their probabilities (as simplified fractions).

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