+0  
 
0
44
1
avatar

 In a shipment of 22 smart phones, 3 are defective. How many ways can a quality control inspector randomly test 5 smart phones, of which 3 are defective?

 Mar 5, 2020
 #1
avatar+109499 
+2

This is  analogous to  finding all  the different  sets  consisiting of the 3 defective  phones and any 2  of the other 19 non-defective  phones

 

So.....the  number  of ways  =  C(19,2)   =  171  ways

 

 

cool cool cool

 Mar 5, 2020

49 Online Users

avatar
avatar
avatar
avatar
avatar
avatar