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Help 19

The gym has 11 different types of machines in the weight room. Geoff has time to use only 3 of them this afternoon. How many different combinations of machines can Geoff choose from to use? Show your work or explain how you got your answer.

 Dec 12, 2018

Best Answer 

 #1
avatar+18311 
+2

11 C 3 = 165 combo choices

 Dec 12, 2018
edited by ElectricPavlov  Dec 12, 2018
 #1
avatar+18311 
+2
Best Answer

11 C 3 = 165 combo choices

ElectricPavlov Dec 12, 2018
edited by ElectricPavlov  Dec 12, 2018
 #2
avatar+4116 
0

could you explain 

NotSoSmart  Dec 12, 2018
 #3
avatar+100473 
0

There are 11 machines available to Geoff

 

He can choose any  3

 

We are actually listing all the possible sets of any 3 of these machines

 

So

 

11Choose 3   =   11C3   =  165  different sets =  165 different combos

 

 

cool cool cool

CPhill  Dec 12, 2018

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