+0  
 
+1
513
1
avatar

An urn contains 5 white and 10 black balls. A fair die is rolled and that numberof balls are randomly chosen from the urn. What is the probability that all of theballs selected are white? 

 Aug 1, 2020
 #1
avatar+118587 
+1

You have to look at each scenario separately and then add them all the probabilities that you get together.

 

P(1 thrown and 1 while all drawn) = 1/6 *  5/15

P(2 thrown and 2 while all drawn) = 1/6 *  5/15 * 4/14

etc

 Aug 1, 2020

4 Online Users

avatar
avatar