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Six green balls and four red balls are in a bag. A ball is taken from the bag, its color recorded, then placed back in the bag. A second ball is taken and its color recorded. A third ball is taken and its color is recorded.  What is the probability the three balls are the same color?

 Dec 5, 2020
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Case 1: All green

 

3/5 * 3/5 * 3/5 = 27 / 125

 

Case 2: All red

 

2/5 * 2/5 * 2/5 = 8 / 125

 

8+ 27 = 35

 

7/25

 Dec 6, 2020

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