The formula for the first n positive numbers is n x (n+1)/2, so for n=11 the sum is 11 x 12 /2 = 66
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The sum of the first three even positive integers is 2 + 4 + 6 = 12.
-21
The first ten positive numbers total 55.
To find the average of integers, add them all together then divide the total by the number of integers.
its impossible