+0  
 
0
105
1
avatar

20% of the shoes in the factory are black. One shoe is chosen and replaced. A second shoe is chosen and replaced. Then a third shoe is chosen. What is the probility that none of the shoes are black?

off-topic
Guest May 6, 2018
edited by Guest  May 6, 2018
 #1
avatar+403 
+1

The probability of not drawing a black shoe is 4/5. Since you replace the shoe each time, you multiply 4/5 by 4/5 by 4/5, which equals 64/125. The probability of not drawinga black shoe is 64/125.

 

Donut🍩🍩🍩

Donut  May 7, 2018

10 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.