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The following are all 24 numbers made of digits 1, 2, 3, 4 exactly once:

1234,1243,1324,1342,1423,1432,2134,2143,2314,2341,2413

,2431,3124,3142,3214,3241,3412,3421,4123,41324213,4231,4312,4321

What is the average of these 24 numbers? Please express the result in decimal form.

 Jan 30, 2021
 #1
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Sum: [ (1234,1243,1324,1342,1423,1432,2134,2143,2314,2341,2413,2431,3124,3142,3214,3241,3412,3421,4123,4132,4213,4231,4312,4321) ==66,660

 

Average =66,660 / 24 =2,777.50 - the average

 Jan 30, 2021

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