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A drawer contains 3 white balls and 6 black balls. Two balls are drawn out of the box at random. What is the probability that they both are black?

 Apr 13, 2022

Best Answer 

 #1
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The probability of the first one drawn black is \(\frac{6}{9}=\frac{2}{3}\) . The probability that you draw the second one black is \(\frac{5}{8}\). So the probability that both of them are black is \(\frac{2}{3}\cdot\frac{5}{8}=\boxed{\frac{5}{12}}\)

 Apr 13, 2022
 #1
avatar+55 
-1
Best Answer

The probability of the first one drawn black is \(\frac{6}{9}=\frac{2}{3}\) . The probability that you draw the second one black is \(\frac{5}{8}\). So the probability that both of them are black is \(\frac{2}{3}\cdot\frac{5}{8}=\boxed{\frac{5}{12}}\)

qjin27 Apr 13, 2022

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