n>=3, generate a matrix of nth such that n^2 is the max number, and max number must be in [1,1] or [end, end]. One example will be suggested below:
Example : n=4
10 9 8 7
11 2 1 6
12 3 4 5
13 14 15 16
Given area find sides
find the maximum element of the matrix
index of n^2 in magic(n)
Slope of the line passing through two points
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