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Anonymous
1
Mac O'Connell ∙
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It is (400 + n^2)/(20*n)
Wiki User
2
2.5
the sum of the elements divided by the number of elements is the average
20.
The product of 20 and 5 is 100. So when divided by the sum of 20 and 5, which is 25, it is 4. The problem is very simple. 100/25=4.