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Jake makes a list of all the four-digit positive integers with the property that the product of the four digits is 5. What is the arithmetic mean of the integers on his list?

 Mar 9, 2020
 #1
avatar+109326 
+2

The only factors (divisors)  of  5  are  1  and 5

 

So....

 

The only way this is possible is if we have  the  following integers:

 

1115

1151

1511

5111

 

The mean  =   8888/4    =  2222

 

 

cool cool cool

 Mar 9, 2020
 #2
avatar+20 
+2

Thanks!

Nerdo  Mar 9, 2020

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