SOLUTION: A box contains 1 red, 2 white, and 4 blue balls. Two balls are drawn without replacement, noting the color of each. If the first two balls drawn are white and blue in either order,

Question 972162: A box contains 1 red, 2 white, and 4 blue balls. Two balls are drawn without replacement, noting the color of each. If the first two balls drawn are white and blue in either order, then one more ball is drawn, and its color noted. Determine the number of elements in the sample space for this experiment. (Draw a tree diagram).
So far I have wrote down the colors of the balls and also put to the side that I need to select 2 balls but for the first to be white and blue and have started my tree diagram but I am stuck now as I don't know how to finish it out after the colors have been chose.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
W =================== B
B =======================W
R==W===B ;;;;;;;;;;;;;;;;;;;;;;;;;R W B
Six possibilities.
The first two balls are clearly white and blue or blue and white. The final ball may be any color.
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