SOLUTION: find the average of all add numbers below 30?

Question 772466: find the average of all add numbers below 30?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Notice that when you start adding up odd
numbers starting with 1:
1 = 1
1 + 3 = 4
1 + 3 + 5 = 9
1 + 3 + 5 + 7 = 16
1 + 3 + 5 + 7 + 9 = 25
-----------------
So, if you have odd numbers starting
with 1, then Sum =
--------------------------
There are 5 odd numbers below 10
There are 4 odd numbers below 8
Following this, there are 15 odd numbers below 30
------------------
Sum =
Sum =
Average =
Average =

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