+0  
 
-1
47
5
avatar+420 

A bag contains these beads: 4 white, 6 red, 5 yellow, 5 blue. One bead is selected, KEPT, and another bead is selected. Find P(blue, then blue)

 May 8, 2020
edited by AltShaka  May 8, 2020
 #1
avatar+1543 
+3

And what's the question?

 May 8, 2020
 #2
avatar+420 
0

Srry i have it now

 May 8, 2020
 #3
avatar+1543 
+3

There are 5 blue marbles out of 20, so 1/4.Then we have one reduced bead so (5-1)/(20-1) = 4/19

 

Multiply these probabilities and you'll have your answer!

 

Ask if you don't understand anything. :)

 May 8, 2020
 #4
avatar+420 
0

So its 4/76?

 May 8, 2020
 #5
avatar+1543 
+3

Yes.  Anything you need me to explain?

hugomimihu  May 8, 2020

15 Online Users