+0  
 
0
38
1
avatar

A hat contains 2 red marbles, 3 blue marbles, and 4 green marbles.  You choose two different marbles at random.  What is the probability that they are the same color?

 May 11, 2020
 #1
avatar+30046 
+4

"A hat contains 2 red marbles, 3 blue marbles, and 4 green marbles.  You choose two different marbles at random.  What is the probability that they are the same color?"

  

            red           blue          green  

\(p=\frac{2}{9}\times \frac{1}{8}+\frac{3}{9}\times \frac{2}{8}+\frac{4}{9}\times \frac{3}{8}=\frac{5}{18}=0.278\)

.
 May 11, 2020
edited by Alan  May 11, 2020

23 Online Users

avatar
avatar
avatar
avatar