Add eight consecutive numbers by multiplying the highest by 8 and subtracting 28. We should choose the numbers such that their sum is 55. Properties edit The number m is a square number if and only if one can arrange m points in a square.
Lets use the example of adding the numbers 1-100 to see how the formula works.
For example if n2 then n 2 4. In the above example 14 15 29 and 29 x 4 116. 2² 2 x 2 4. But if you think in a different way you will notice that the total of first number 1 and the last number 9 is 10 as well as the total of second number 2 and the second last number 8 is also 10.