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avatar+429 

Answer: 3/7

 Mar 16, 2019
 #1
avatar+429 
+1

Is there a way to use P(this given this) on this question?

 Mar 16, 2019
 #2
avatar+99237 
+2

Either box can be selected first

 

If the first box is the first one selected

 

(3/7)(2/6)  =   6/42  = 1/7

 

If the second box is selected first

 

(4/7) (3/6) = 12/42  =  2/7

 

So...the combined probabilities =   1/7 + 2/7  = 3 / 7

 

 

cool cool  cool

 Mar 16, 2019
 #3
avatar+429 
0

Thanks!!!

dgfgrafgdfge111  Mar 18, 2019

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