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During her birthday, her parents have decided to give Laura and her 2 younger brothers new cellphones. However, they are confused between the innumerable service providers. Assuming no child wants a provider that another sibling has, and that there are 20 service providers, in how many ways can the parents grant the children their phones?

 Jan 15, 2019

Best Answer 

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20 choices for child 1   leaves

  19 choices for child 2  leaves

     18 choices for child 3

 

20 x 19 x 18 = 6840 possible combos

 Jan 15, 2019
 #1
avatar+25891 
0
Best Answer

20 choices for child 1   leaves

  19 choices for child 2  leaves

     18 choices for child 3

 

20 x 19 x 18 = 6840 possible combos

ElectricPavlov Jan 15, 2019

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